Common Weakness Enumeration
CWE-674
Allowed-with-ReviewUncontrolled Recursion
Abstraction: Class · Status: Draft
The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.
928 vulnerabilities reference this CWE, most recent first.
CVE-2026-1681 (GCVE-0-2026-1681)
Vulnerability from cvelistv5 – Published: 2026-05-12 05:39 – Updated: 2026-10-15 22:10
VLAI
EPSS
VEX
Title
net: Stack Overflow with Ping (to own IP Address) via Shell
Summary
Issuing an ICMP ping via the `net ping` shell command to a device's own IPv4 address causes the network stack to recursively re-enter the input path on the same system work-queue stack. Because the destination is recognized as a local address, both the echo request and the resulting echo reply are processed inline before the current frame returns. The nested input-path frames exceed the work-queue stack and trigger a stack overflow.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-12 13:15 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zephyrproject-rtos | Zephyr |
Affected:
* , < 4.4.0
(git)
|
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CVE-2026-1069 (GCVE-0-2026-1069)
Vulnerability from cvelistv5 – Published: 2026-03-11 16:05 – Updated: 2026-03-11 19:39
VLAI
EPSS
VEX
Title
Uncontrolled Recursion in GitLab
Summary
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.9 before 18.9.2 that could have allowed an unauthenticated user to cause a denial of service by sending specially crafted GraphQL requests due to uncontrolled recursion under certain circumstances.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-11 19:39 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://hackerone.com/reports/3483687 | technical-descriptionexploitpermissions-required |
| https://gitlab.com/gitlab-org/gitlab/-/work_items… | |
| https://about.gitlab.com/releases/2026/03/11/patc… |
Impacted products
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CVE-2026-0994 (GCVE-0-2026-0994)
Vulnerability from cvelistv5 – Published: 2026-01-23 14:55 – Updated: 2026-09-01 12:04
VLAI
EPSS
VEX
Title
Denial of Service in Python Protobuf
Summary
A denial-of-service (DoS) vulnerability exists in google.protobuf.json_format.ParseDict() in Python, where the max_recursion_depth limit can be bypassed when parsing nested google.protobuf.Any messages.
Due to missing recursion depth accounting inside the internal Any-handling logic, an attacker can supply deeply nested Any structures that bypass the intended recursion limit, eventually exhausting Python’s recursion stack and causing a RecursionError.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-23 15:33 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
21 references
Impacted products
21 products
| Vendor | Product | Version | |
|---|---|---|---|
| Python | Protobuf |
Affected:
<=v33.4
(custom)
|
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 8 |
Unaffected:
0:5.29.6-1.el8ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el8 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 9 |
Unaffected:
0:5.29.6-1.el9ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 for RHEL 9 |
Unaffected:
0:5.29.6-1.el9ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:3.19.6-15.el10_1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.1 |
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:3.19.6-11.el10_0.1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:3.14.0-17.el9_7 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions |
Unaffected:
0:3.14.0-9.el9_0.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.0 |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:3.14.0-13.el9_2.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2 |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support |
Unaffected:
0:3.14.0-13.el9_4.1 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.4 |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:3.14.0-16.el9_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
|
| Red Hat | Red Hat AI Inference Server 3.2 |
Unaffected:
1772160593 , < *
(rpm)
cpe:/a:redhat:ai_inference_server:3.2::el9 |
|
| Red Hat | Red Hat AI Inference Server 3.2 |
Unaffected:
1772160625 , < *
(rpm)
cpe:/a:redhat:ai_inference_server:3.2::el9 |
|
| Red Hat | Red Hat AI Inference Server 3.3 |
Unaffected:
1778244546 , < *
(rpm)
cpe:/a:redhat:ai_inference_server:3.3::el9 |
|
| Red Hat | Red Hat AI Inference Server 3.3 |
Unaffected:
1775680192 , < *
(rpm)
cpe:/a:redhat:ai_inference_server:3.3::el9 |
|
| Red Hat | Red Hat AI Inference Server 3.3 |
Unaffected:
1775680262 , < *
(rpm)
cpe:/a:redhat:ai_inference_server:3.3::el9 |
|
| Red Hat | Red Hat AI Inference Server 3.3 |
Unaffected:
1775749857 , < *
(rpm)
cpe:/a:redhat:ai_inference_server:3.3::el9 |
|
| Red Hat | Red Hat AMQ Clients |
cpe:/a:redhat:amq_clients:2023
|
|
| Red Hat | Red Hat Ansible Automation Platform 2 |
cpe:/a:redhat:ansible_automation_platform:2
|
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1
|
|
| Red Hat | Red Hat OpenStack Platform 16.2 |
cpe:/a:redhat:openstack:16.2
|
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CVE-2026-0990 (GCVE-0-2026-0990)
Vulnerability from cvelistv5 – Published: 2026-01-15 14:20 – Updated: 2026-09-01 11:54
VLAI
EPSS
VEX
Title
Libxml2: libxml2: denial of service via uncontrolled recursion in xml catalog processing
Summary
A flaw was found in libxml2, an XML parsing library. This uncontrolled recursion vulnerability occurs in the xmlCatalogXMLResolveURI function when an XML catalog contains a delegate URI entry that references itself. A remote attacker could exploit this configuration-dependent issue by providing a specially crafted XML catalog, leading to infinite recursion and call stack exhaustion. This ultimately results in a segmentation fault, causing a Denial of Service (DoS) by crashing affected applications.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-15 16:31 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:7519 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-0990 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2429959 | issue-trackingx_refsource_REDHAT |
| https://gitlab.gnome.org/GNOME/libxml2/-/issues/1018 |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Hardened Images |
Unaffected:
2.15.2-0.3.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat JBoss Core Services |
cpe:/a:redhat:jboss_core_services:1
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
Date Public
2026-01-15 00:00
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CVE-2026-0989 (GCVE-0-2026-0989)
Vulnerability from cvelistv5 – Published: 2026-01-15 14:20 – Updated: 2026-09-01 12:10
VLAI
EPSS
VEX
Title
Libxml2: unbounded relaxng include recursion leading to stack overflow
Summary
A flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are handled. The parser does not enforce a limit on inclusion depth when resolving nested <include> directives. Specially crafted or overly complex schemas can cause excessive recursion during parsing. This may lead to stack exhaustion and application crashes, creating a denial-of-service risk.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-15 16:31 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:7519 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-0989 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2429933 | issue-trackingx_refsource_REDHAT |
| https://gitlab.gnome.org/GNOME/libxml2/-/issues/998 |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Hardened Images |
Unaffected:
2.15.2-0.3.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat JBoss Core Services |
cpe:/a:redhat:jboss_core_services:1
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
Date Public
2026-01-15 00:00
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GCVE-1988-2026-0382
Vulnerability from gna-1988 – Published: 2026-09-11 11:55 – Updated: 2026-09-11 11:55
VLAI
EPSS
VEX
Title
Dovecot Security Advisory 3/2026
Summary
Hi!
We're sharing our latest advisory with you and like to thank everyone who contributed in finding and solving those
vulnerabilities. This advisory will also be published at
https://documentation.open-xchange.com/dovecot/security/advisories/html/2026/oxdc-adv-2026-0003.html
---
Classification: TLP:GREEN
Internal reference: DOV-8476
Type: CWE-403 (Exposure of File Descriptor to Unintended Control Sphere ('File Descriptor Leak'))
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <2.3.22.2, OX Dovecot Pro core >=3.0.0 <3.0.7, OX Dovecot Pro core
=3.1.0 <3.1.6, OX Dovecot CE core >=2.3.0 <2.4.5
First fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE
core 2.4.5
Discovery date: 2025-11-25
Solution date: 2026-08-26
Disclosure date: 2026-08-26
CVE: CVE-2026-33263
CVSS: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)
Details:
submission-login: Panic when mail_max_userip_connections is reached: Panic: epoll_ctl(del, 8) failed: Bad file
descriptor. When mail_max_userip_connections is set (defaul
t 10) and reached, submission-login can crash with epoll() panic caused by file descriptor handling issues.
Risk:
If running in high-security mode (default for community releases), only the new submission connection gets terminated.
If running in high-performance mode (default for Pr
o releases), all connections handled by the submission-login process will be terminated. The crashes can cause failure
for user to send a message, or it can cause duplica
te messages to be sent. If TLS is not used (in the backend server processing the submission), duplicate deliveries
cannot happen, because the crash can only happen at AUT
H stage. No publicly available exploits are known.
Solution:
Limit the number of connections handled by single submission-login process. This has a performance impact though.
Update to non-vulnerable version.
---
Internal reference: DOV-8874
Type: CWE-400 (Uncontrolled Resource Consumption)
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <3.0.7, OX Dovecot Pro core >=3.1.0 <3.1.6, OX Dovecot CE core >=2.3.0
<2.4.5
First fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 3.1.6, OX Dovecot CE core 2.4.5
Discovery date: 2026-03-11
Solution date: 2026-08-26
Disclosure date: 2026-08-26
Researcher credits: ylwango613@yeswehack
CVE: CVE-2026-33607
CVSS: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)
Details:
Dovecot IMAP LIST match_sub() Exponential Backtracking — CPU Denial of Service. An attacker that has valid credentials
can use IMAP LIST command to consume CPU.
Risk:
This can cause degradation or denial of service for IMAP. No publicly available exploits are known.
Solution:
Monitor system for abnormal CPU usage and kill the offending process and lock account. Alternatively install fixed
version.
---
Internal reference: DOV-8884
Type: CWE-400 (Uncontrolled Resource Consumption)
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <2.3.22.2, OX Dovecot Pro core >=3.0.0 <3.0.7, OX Dovecot Pro core
=3.1.0 <3.1.6, OX Dovecot CE core >=2.3.0 <2.4.5
First fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE
core 2.4.5
Discovery date: 2026-03-13
Solution date: 2026-08-26
Disclosure date: 2026-08-26
CVE: CVE-2026-27852
CVSS: 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Details:
DoS by sending mail with bad header. An attacker that can send mail to a user can craft a message whose headers contain
a very large number of email addresses or MIME par
ameters, which causes excessive memory usage when the message is later parsed.
Risk:
The message is still delivered, but reading it over IMAP can exhaust the memory limit of the process and terminate it,
causing denial of service for the affected user. No
publicly available exploits are known.
Solution:
Update to non-vulnerable version.
---
Internal reference: DOV-8941
Type: CWE-93 (Improper Neutralization of CRLF Sequences ('CRLF Injection'))
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <2.3.22.2, OX Dovecot Pro core >=3.0.0 <3.0.7, OX Dovecot Pro core
=3.1.0 <3.1.6, OX Dovecot CE core >=2.3.0 <2.4.5
First fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE
core 2.4.5
Discovery date: 2026-03-24
Solution date: 2026-08-26
Disclosure date: 2026-08-26
Researcher credits: thanos_haruki@yeswehack
CVE: CVE-2026-33606
CVSS: 4.8 (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N)
Details:
dsync: Mail content can cause dsync protocol injection. Mail content stored by a user can be crafted so that it is
interpreted as dsync protocol commands when an administ
rator later runs dsync with the stream protocol, for example during a migration.
Risk:
Injected commands can modify mailbox state on the destination during migration or replication, including internal
mailbox attributes that a user should not be able to set
directly. It can also cause dsync errors. No publicly available exploits are known.
Solution:
Avoid running dsync with the stream protocol on mailboxes with untrusted content. Update to non-vulnerable version.
---
Internal reference: DOV-8947
Type: CWE-655 (Insufficient Psychological Acceptability)
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <2.3.22.2, OX Dovecot Pro core >=3.0.0 <3.0.7, OX Dovecot Pro core
=3.1.0 <3.1.6, OX Dovecot CE core >=2.3.0 <2.4.5
First fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE
core 2.4.5
Discovery date: 2026-03-24
Solution date: 2026-08-26
Disclosure date: 2026-08-26
Researcher credits: heckintosh@yeswehack
CVE: CVE-2026-33604
CVSS: 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N)
Details:
SMTP Smuggling via Missing Dot-Stuffing After Bare Carriage Return. An attacker that can get Dovecot to relay a
message, for example through Sieve redirect or submission
relay, can use a crafted line ending in the message body to bypass the outbound protection that prevents message
content from being interpreted as SMTP commands.
Risk:
A downstream mail server that hasn't yet fixed the SMTP smuggling vulnerability can be tricked into treating part of
the message body as new SMTP commands, allowing injec
tion of spoofed email. This is the same vulnerability class as CVE-2023-51764 and CVE-2023-51766. No publicly available
exploits are known.
Solution:
Where you control the receiving mail servers, ensure they reject bare carriage returns in message data. Update to
non-vulnerable version.
---
Internal reference: DOV-8949
Type: CWE-400 (Uncontrolled Resource Consumption)
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <2.3.22.2, OX Dovecot Pro core >=3.0.0 <3.0.7, OX Dovecot Pro core
=3.1.0 <3.1.6, OX Dovecot CE core >=2.3.0 <2.4.5
First fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE
core 2.4.5
Discovery date: 2026-03-24
Solution date: 2026-08-26
Disclosure date: 2026-08-26
Researcher credits: djvirus@yeswehack
CVE: CVE-2026-40014
CVSS: 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
Details:
IMAP THREAD REFERENCES O(N²) CPU DoS via Crafted References Header (index-thread-links.c). An attacker that can send
mail to a user can craft a message header that makes
the IMAP THREAD command consume CPU disproportionate to the size of the message.
Risk:
When a mail client issues a THREAD command on the affected mailbox, this can cause degradation or denial of service for
IMAP. No publicly available exploits are known.
Solution:
Monitor system for abnormal CPU usage, kill the offending process and remove the offending message from the affected
mailbox. Update to non-vulnerable version.
---
Internal reference: DOV-8991
Type: CWE-124 (Buffer Underwrite ('Buffer Underflow'))
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <2.3.22.2, OX Dovecot Pro core >=3.0.0 <3.0.7, OX Dovecot Pro core
=3.1.0 <3.1.6, OX Dovecot CE core >=2.3.0 <2.4.5
First fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE
core 2.4.5
Discovery date: 2026-04-02
Solution date: 2026-08-26
Disclosure date: 2026-08-26
Researcher credits: ilyar@yeswehack
CVE: CVE-2026-40013
CVSS: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)
Details:
pigeonhole: Stack Buffer Underflow in Pigeonhole ManageSieve CHECKSCRIPT/PUTSCRIPT. An attacker that has valid
credentials can submit a Sieve script containing an extreme
numeric literal, which causes an out-of-bounds write when the ManageSieve service compiles the script.
Risk:
This causes memory corruption and an observed crash of the ManageSieve process, resulting in denial of service for
script management. This might be able to be used for re
mote code execution. No publicly available exploits are known.
Solution:
Disable the ManageSieve service if users do not need remote Sieve script management. Update to non-vulnerable version.
---
Internal reference: DOV-8994
Type: CWE-400 (Uncontrolled Resource Consumption)
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <2.3.22.2, OX Dovecot Pro core >=3.0.0 <3.0.7, OX Dovecot Pro core
=3.1.0 <3.1.6, OX Dovecot CE core >=2.3.0 <2.4.5
First fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE
core 2.4.5
Discovery date: 2026-04-02
Solution date: 2026-08-26
Disclosure date: 2026-08-26
Researcher credits: ilyar@yeswehack
CVE: CVE-2026-33605
CVSS: 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Details:
managesieve-login: Pre-auth crash. An unauthenticated attacker can crash the ManageSieve login process by sending a
small malformed command before authenticating.
Risk:
If running in high-security mode (default for community releases), only the attacker's own connection is terminated. If
running in high-performance mode (default for Pro
releases), all connections handled by the same managesieve-login process are terminated. Repeating the attack can cause
denial of service for Sieve script management. No
publicly available exploits are known.
Solution:
Restrict network access to the ManageSieve service to trusted clients. Update to non-vulnerable version.
---
Internal reference: DOV-9039
Type: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'))
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <3.1.6, OX Dovecot CE core >=2.3.0 <2.4.5
First fixed revision: OX Dovecot Pro core 3.1.6, OX Dovecot CE core 2.4.5
Discovery date: 2026-04-08
Solution date: 2026-08-26
Disclosure date: 2026-08-26
Researcher credits: tipsennn@yeswehack
CVE: CVE-2026-40018
CVSS: 7.4 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
Details:
MySQL multi-byte escaping wrong. None
Risk:
None No publicly available exploits are known.
Solution:
None
---
Internal reference: DOV-9041
Type: CWE-400 (Uncontrolled Resource Consumption)
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot CE core >=2.4.3 <2.4.5
First fixed revision: OX Dovecot CE core 2.4.5
Discovery date: 2026-04-08
Solution date: 2026-08-26
Disclosure date: 2026-08-26
Researcher credits: ilyar@yeswehack
CVE: CVE-2026-4
Severity
No CVSS data available.
CWE
Assigner
References
5 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Dovecot | Security Advisory |
Affected:
unknown
|
Relationships
reference
GCVE-1988-2026-0382 (this record)
- related CVE-2023-51764
- related CVE-2023-51766
- related CVE-2026-27852
- related CVE-2026-33263
- related CVE-2026-33604
- related CVE-2026-33605
- related CVE-2026-33606
- related CVE-2026-33607
- related CVE-2026-40013
- related CVE-2026-40014
- related CVE-2026-40015
- related CVE-2026-40017
- related CVE-2026-40018
- related CVE-2026-40019
- related CVE-2026-40203
- related CVE-2026-40204
- related CVE-2026-40205
- related CVE-2026-42007
- related CVE-2026-42008
- related CVE-2026-42391
- related CVE-2026-42392
- related CVE-2026-42393
- related CVE-2026-42395
- related CVE-2026-52681
- related CVE-2026-52687
- related CVE-2026-73208
- related CVE-2026-73209
{
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"vendor": "Dovecot",
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{
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"version": "unknown"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Aki Tuomi"
}
],
"descriptions": [
{
"lang": "en",
"value": "Hi!\n\nWe\u0027re sharing our latest advisory with you and like to thank everyone who contributed in finding and solving those \nvulnerabilities. This advisory will also be published at \nhttps://documentation.open-xchange.com/dovecot/security/advisories/html/2026/oxdc-adv-2026-0003.html\n\n---\n\nClassification: TLP:GREEN\n\nInternal reference: DOV-8476\nType: CWE-403 (Exposure of File Descriptor to Unintended Control Sphere (\u0027File Descriptor Leak\u0027))\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c2.3.22.2, OX Dovecot Pro core \u003e=3.0.0 \u003c3.0.7, OX Dovecot Pro core \n=3.1.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE \ncore 2.4.5\nDiscovery date: 2025-11-25\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nCVE: CVE-2026-33263\nCVSS: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)\n\nDetails:\nsubmission-login: Panic when mail_max_userip_connections is reached: Panic: epoll_ctl(del, 8) failed: Bad file \ndescriptor. When mail_max_userip_connections is set (defaul\nt 10) and reached, submission-login can crash with epoll() panic caused by file descriptor handling issues.\n\nRisk:\nIf running in high-security mode (default for community releases), only the new submission connection gets terminated. \nIf running in high-performance mode (default for Pr\no releases), all connections handled by the submission-login process will be terminated. The crashes can cause failure \nfor user to send a message, or it can cause duplica\nte messages to be sent. If TLS is not used (in the backend server processing the submission), duplicate deliveries \ncannot happen, because the crash can only happen at AUT\nH stage. No publicly available exploits are known.\n\nSolution:\nLimit the number of connections handled by single submission-login process. This has a performance impact though. \nUpdate to non-vulnerable version.\n\n\n\n---\n\n\n\nInternal reference: DOV-8874\nType: CWE-400 (Uncontrolled Resource Consumption)\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c3.0.7, OX Dovecot Pro core \u003e=3.1.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \n\u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 3.1.6, OX Dovecot CE core 2.4.5\nDiscovery date: 2026-03-11\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nResearcher credits: ylwango613@yeswehack\nCVE: CVE-2026-33607\nCVSS: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)\n\nDetails:\nDovecot IMAP LIST match_sub() Exponential Backtracking \u2014 CPU Denial of Service. An attacker that has valid credentials \ncan use IMAP LIST command to consume CPU.\n\nRisk:\nThis can cause degradation or denial of service for IMAP. No publicly available exploits are known.\n\nSolution:\nMonitor system for abnormal CPU usage and kill the offending process and lock account. Alternatively install fixed \nversion.\n\n\n\n---\n\n\n\nInternal reference: DOV-8884\nType: CWE-400 (Uncontrolled Resource Consumption)\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c2.3.22.2, OX Dovecot Pro core \u003e=3.0.0 \u003c3.0.7, OX Dovecot Pro core \n=3.1.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE \ncore 2.4.5\nDiscovery date: 2026-03-13\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nCVE: CVE-2026-27852\nCVSS: 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)\n\nDetails:\nDoS by sending mail with bad header. An attacker that can send mail to a user can craft a message whose headers contain \na very large number of email addresses or MIME par\nameters, which causes excessive memory usage when the message is later parsed.\n\nRisk:\nThe message is still delivered, but reading it over IMAP can exhaust the memory limit of the process and terminate it, \ncausing denial of service for the affected user. No\n publicly available exploits are known.\n\nSolution:\nUpdate to non-vulnerable version.\n\n\n\n---\n\n\n\nInternal reference: DOV-8941\nType: CWE-93 (Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027))\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c2.3.22.2, OX Dovecot Pro core \u003e=3.0.0 \u003c3.0.7, OX Dovecot Pro core \n=3.1.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE \ncore 2.4.5\nDiscovery date: 2026-03-24\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nResearcher credits: thanos_haruki@yeswehack\nCVE: CVE-2026-33606\nCVSS: 4.8 (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N)\n\nDetails:\ndsync: Mail content can cause dsync protocol injection. Mail content stored by a user can be crafted so that it is \ninterpreted as dsync protocol commands when an administ\nrator later runs dsync with the stream protocol, for example during a migration.\n\nRisk:\nInjected commands can modify mailbox state on the destination during migration or replication, including internal \nmailbox attributes that a user should not be able to set\n directly. It can also cause dsync errors. No publicly available exploits are known.\n\nSolution:\nAvoid running dsync with the stream protocol on mailboxes with untrusted content. Update to non-vulnerable version.\n\n\n\n---\n\n\n\nInternal reference: DOV-8947\nType: CWE-655 (Insufficient Psychological Acceptability)\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c2.3.22.2, OX Dovecot Pro core \u003e=3.0.0 \u003c3.0.7, OX Dovecot Pro core \n=3.1.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE \ncore 2.4.5\nDiscovery date: 2026-03-24\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nResearcher credits: heckintosh@yeswehack\nCVE: CVE-2026-33604\nCVSS: 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N)\n\nDetails:\nSMTP Smuggling via Missing Dot-Stuffing After Bare Carriage Return. An attacker that can get Dovecot to relay a \nmessage, for example through Sieve redirect or submission \nrelay, can use a crafted line ending in the message body to bypass the outbound protection that prevents message \ncontent from being interpreted as SMTP commands.\n\nRisk:\nA downstream mail server that hasn\u0027t yet fixed the SMTP smuggling vulnerability can be tricked into treating part of \nthe message body as new SMTP commands, allowing injec\ntion of spoofed email. This is the same vulnerability class as CVE-2023-51764 and CVE-2023-51766. No publicly available \nexploits are known.\n\nSolution:\nWhere you control the receiving mail servers, ensure they reject bare carriage returns in message data. Update to \nnon-vulnerable version.\n\n\n\n---\n\n\n\nInternal reference: DOV-8949\nType: CWE-400 (Uncontrolled Resource Consumption)\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c2.3.22.2, OX Dovecot Pro core \u003e=3.0.0 \u003c3.0.7, OX Dovecot Pro core \n=3.1.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE \ncore 2.4.5\nDiscovery date: 2026-03-24\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nResearcher credits: djvirus@yeswehack\nCVE: CVE-2026-40014\nCVSS: 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)\n\nDetails:\nIMAP THREAD REFERENCES O(N\u00b2) CPU DoS via Crafted References Header (index-thread-links.c). An attacker that can send \nmail to a user can craft a message header that makes \nthe IMAP THREAD command consume CPU disproportionate to the size of the message.\n\nRisk:\nWhen a mail client issues a THREAD command on the affected mailbox, this can cause degradation or denial of service for \nIMAP. No publicly available exploits are known.\n\nSolution:\nMonitor system for abnormal CPU usage, kill the offending process and remove the offending message from the affected \nmailbox. Update to non-vulnerable version.\n\n\n\n---\n\n\n\nInternal reference: DOV-8991\nType: CWE-124 (Buffer Underwrite (\u0027Buffer Underflow\u0027))\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c2.3.22.2, OX Dovecot Pro core \u003e=3.0.0 \u003c3.0.7, OX Dovecot Pro core \n=3.1.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE \ncore 2.4.5\nDiscovery date: 2026-04-02\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nResearcher credits: ilyar@yeswehack\nCVE: CVE-2026-40013\nCVSS: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)\n\nDetails:\npigeonhole: Stack Buffer Underflow in Pigeonhole ManageSieve CHECKSCRIPT/PUTSCRIPT. An attacker that has valid \ncredentials can submit a Sieve script containing an extreme\n numeric literal, which causes an out-of-bounds write when the ManageSieve service compiles the script.\n\nRisk:\nThis causes memory corruption and an observed crash of the ManageSieve process, resulting in denial of service for \nscript management. This might be able to be used for re\nmote code execution. No publicly available exploits are known.\n\nSolution:\nDisable the ManageSieve service if users do not need remote Sieve script management. Update to non-vulnerable version.\n\n\n\n---\n\n\n\nInternal reference: DOV-8994\nType: CWE-400 (Uncontrolled Resource Consumption)\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c2.3.22.2, OX Dovecot Pro core \u003e=3.0.0 \u003c3.0.7, OX Dovecot Pro core \n=3.1.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE \ncore 2.4.5\nDiscovery date: 2026-04-02\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nResearcher credits: ilyar@yeswehack\nCVE: CVE-2026-33605\nCVSS: 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)\n\nDetails:\nmanagesieve-login: Pre-auth crash. An unauthenticated attacker can crash the ManageSieve login process by sending a \nsmall malformed command before authenticating.\n\nRisk:\nIf running in high-security mode (default for community releases), only the attacker\u0027s own connection is terminated. If \nrunning in high-performance mode (default for Pro \nreleases), all connections handled by the same managesieve-login process are terminated. Repeating the attack can cause \ndenial of service for Sieve script management. No \npublicly available exploits are known.\n\nSolution:\nRestrict network access to the ManageSieve service to trusted clients. Update to non-vulnerable version.\n\n\n\n---\n\n\n\nInternal reference: DOV-9039\nType: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command (\u0027SQL Injection\u0027))\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.1.6, OX Dovecot CE core 2.4.5\nDiscovery date: 2026-04-08\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nResearcher credits: tipsennn@yeswehack\nCVE: CVE-2026-40018\nCVSS: 7.4 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)\n\nDetails:\nMySQL multi-byte escaping wrong. None\n\nRisk:\nNone No publicly available exploits are known.\n\nSolution:\nNone\n\n\n\n---\n\n\n\nInternal reference: DOV-9041\nType: CWE-400 (Uncontrolled Resource Consumption)\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot CE core \u003e=2.4.3 \u003c2.4.5\nFirst fixed revision: OX Dovecot CE core 2.4.5\nDiscovery date: 2026-04-08\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nResearcher credits: ilyar@yeswehack\nCVE: CVE-2026-4"
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GCVE-1988-2026-0020
Vulnerability from gna-1988 – Published: 2026-09-07 13:20 – Updated: 2026-09-11 11:55
VLAI
EPSS
VEX
Title
Dovecot Security Advisory 3/2026
Summary
Hi!
We're sharing our latest advisory with you and like to thank everyone who contributed in finding and solving those
vulnerabilities. This advisory will also be published at
https://documentation.open-xchange.com/dovecot/security/advisories/html/2026/oxdc-adv-2026-0003.html
---
Classification: TLP:GREEN
Internal reference: DOV-8476
Type: CWE-403 (Exposure of File Descriptor to Unintended Control Sphere ('File Descriptor Leak'))
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <2.3.22.2, OX Dovecot Pro core >=3.0.0 <3.0.7, OX Dovecot Pro core
=3.1.0 <3.1.6, OX Dovecot CE core >=2.3.0 <2.4.5
First fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE
core 2.4.5
Discovery date: 2025-11-25
Solution date: 2026-08-26
Disclosure date: 2026-08-26
CVE: CVE-2026-33263
CVSS: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)
Details:
submission-login: Panic when mail_max_userip_connections is reached: Panic: epoll_ctl(del, 8) failed: Bad file
descriptor. When mail_max_userip_connections is set (defaul
t 10) and reached, submission-login can crash with epoll() panic caused by file descriptor handling issues.
Risk:
If running in high-security mode (default for community releases), only the new submission connection gets terminated.
If running in high-performance mode (default for Pr
o releases), all connections handled by the submission-login process will be terminated. The crashes can cause failure
for user to send a message, or it can cause duplica
te messages to be sent. If TLS is not used (in the backend server processing the submission), duplicate deliveries
cannot happen, because the crash can only happen at AUT
H stage. No publicly available exploits are known.
Solution:
Limit the number of connections handled by single submission-login process. This has a performance impact though.
Update to non-vulnerable version.
---
Internal reference: DOV-8874
Type: CWE-400 (Uncontrolled Resource Consumption)
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <3.0.7, OX Dovecot Pro core >=3.1.0 <3.1.6, OX Dovecot CE core >=2.3.0
<2.4.5
First fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 3.1.6, OX Dovecot CE core 2.4.5
Discovery date: 2026-03-11
Solution date: 2026-08-26
Disclosure date: 2026-08-26
Researcher credits: ylwango613@yeswehack
CVE: CVE-2026-33607
CVSS: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)
Details:
Dovecot IMAP LIST match_sub() Exponential Backtracking — CPU Denial of Service. An attacker that has valid credentials
can use IMAP LIST command to consume CPU.
Risk:
This can cause degradation or denial of service for IMAP. No publicly available exploits are known.
Solution:
Monitor system for abnormal CPU usage and kill the offending process and lock account. Alternatively install fixed
version.
---
Internal reference: DOV-8884
Type: CWE-400 (Uncontrolled Resource Consumption)
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <2.3.22.2, OX Dovecot Pro core >=3.0.0 <3.0.7, OX Dovecot Pro core
=3.1.0 <3.1.6, OX Dovecot CE core >=2.3.0 <2.4.5
First fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE
core 2.4.5
Discovery date: 2026-03-13
Solution date: 2026-08-26
Disclosure date: 2026-08-26
CVE: CVE-2026-27852
CVSS: 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Details:
DoS by sending mail with bad header. An attacker that can send mail to a user can craft a message whose headers contain
a very large number of email addresses or MIME par
ameters, which causes excessive memory usage when the message is later parsed.
Risk:
The message is still delivered, but reading it over IMAP can exhaust the memory limit of the process and terminate it,
causing denial of service for the affected user. No
publicly available exploits are known.
Solution:
Update to non-vulnerable version.
---
Internal reference: DOV-8941
Type: CWE-93 (Improper Neutralization of CRLF Sequences ('CRLF Injection'))
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <2.3.22.2, OX Dovecot Pro core >=3.0.0 <3.0.7, OX Dovecot Pro core
=3.1.0 <3.1.6, OX Dovecot CE core >=2.3.0 <2.4.5
First fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE
core 2.4.5
Discovery date: 2026-03-24
Solution date: 2026-08-26
Disclosure date: 2026-08-26
Researcher credits: thanos_haruki@yeswehack
CVE: CVE-2026-33606
CVSS: 4.8 (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N)
Details:
dsync: Mail content can cause dsync protocol injection. Mail content stored by a user can be crafted so that it is
interpreted as dsync protocol commands when an administ
rator later runs dsync with the stream protocol, for example during a migration.
Risk:
Injected commands can modify mailbox state on the destination during migration or replication, including internal
mailbox attributes that a user should not be able to set
directly. It can also cause dsync errors. No publicly available exploits are known.
Solution:
Avoid running dsync with the stream protocol on mailboxes with untrusted content. Update to non-vulnerable version.
---
Internal reference: DOV-8947
Type: CWE-655 (Insufficient Psychological Acceptability)
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <2.3.22.2, OX Dovecot Pro core >=3.0.0 <3.0.7, OX Dovecot Pro core
=3.1.0 <3.1.6, OX Dovecot CE core >=2.3.0 <2.4.5
First fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE
core 2.4.5
Discovery date: 2026-03-24
Solution date: 2026-08-26
Disclosure date: 2026-08-26
Researcher credits: heckintosh@yeswehack
CVE: CVE-2026-33604
CVSS: 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N)
Details:
SMTP Smuggling via Missing Dot-Stuffing After Bare Carriage Return. An attacker that can get Dovecot to relay a
message, for example through Sieve redirect or submission
relay, can use a crafted line ending in the message body to bypass the outbound protection that prevents message
content from being interpreted as SMTP commands.
Risk:
A downstream mail server that hasn't yet fixed the SMTP smuggling vulnerability can be tricked into treating part of
the message body as new SMTP commands, allowing injec
tion of spoofed email. This is the same vulnerability class as CVE-2023-51764 and CVE-2023-51766. No publicly available
exploits are known.
Solution:
Where you control the receiving mail servers, ensure they reject bare carriage returns in message data. Update to
non-vulnerable version.
---
Internal reference: DOV-8949
Type: CWE-400 (Uncontrolled Resource Consumption)
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <2.3.22.2, OX Dovecot Pro core >=3.0.0 <3.0.7, OX Dovecot Pro core
=3.1.0 <3.1.6, OX Dovecot CE core >=2.3.0 <2.4.5
First fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE
core 2.4.5
Discovery date: 2026-03-24
Solution date: 2026-08-26
Disclosure date: 2026-08-26
Researcher credits: djvirus@yeswehack
CVE: CVE-2026-40014
CVSS: 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
Details:
IMAP THREAD REFERENCES O(N²) CPU DoS via Crafted References Header (index-thread-links.c). An attacker that can send
mail to a user can craft a message header that makes
the IMAP THREAD command consume CPU disproportionate to the size of the message.
Risk:
When a mail client issues a THREAD command on the affected mailbox, this can cause degradation or denial of service for
IMAP. No publicly available exploits are known.
Solution:
Monitor system for abnormal CPU usage, kill the offending process and remove the offending message from the affected
mailbox. Update to non-vulnerable version.
---
Internal reference: DOV-8991
Type: CWE-124 (Buffer Underwrite ('Buffer Underflow'))
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <2.3.22.2, OX Dovecot Pro core >=3.0.0 <3.0.7, OX Dovecot Pro core
=3.1.0 <3.1.6, OX Dovecot CE core >=2.3.0 <2.4.5
First fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE
core 2.4.5
Discovery date: 2026-04-02
Solution date: 2026-08-26
Disclosure date: 2026-08-26
Researcher credits: ilyar@yeswehack
CVE: CVE-2026-40013
CVSS: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)
Details:
pigeonhole: Stack Buffer Underflow in Pigeonhole ManageSieve CHECKSCRIPT/PUTSCRIPT. An attacker that has valid
credentials can submit a Sieve script containing an extreme
numeric literal, which causes an out-of-bounds write when the ManageSieve service compiles the script.
Risk:
This causes memory corruption and an observed crash of the ManageSieve process, resulting in denial of service for
script management. This might be able to be used for re
mote code execution. No publicly available exploits are known.
Solution:
Disable the ManageSieve service if users do not need remote Sieve script management. Update to non-vulnerable version.
---
Internal reference: DOV-8994
Type: CWE-400 (Uncontrolled Resource Consumption)
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <2.3.22.2, OX Dovecot Pro core >=3.0.0 <3.0.7, OX Dovecot Pro core
=3.1.0 <3.1.6, OX Dovecot CE core >=2.3.0 <2.4.5
First fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE
core 2.4.5
Discovery date: 2026-04-02
Solution date: 2026-08-26
Disclosure date: 2026-08-26
Researcher credits: ilyar@yeswehack
CVE: CVE-2026-33605
CVSS: 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Details:
managesieve-login: Pre-auth crash. An unauthenticated attacker can crash the ManageSieve login process by sending a
small malformed command before authenticating.
Risk:
If running in high-security mode (default for community releases), only the attacker's own connection is terminated. If
running in high-performance mode (default for Pro
releases), all connections handled by the same managesieve-login process are terminated. Repeating the attack can cause
denial of service for Sieve script management. No
publicly available exploits are known.
Solution:
Restrict network access to the ManageSieve service to trusted clients. Update to non-vulnerable version.
---
Internal reference: DOV-9039
Type: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'))
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot Pro core >=2.3.0 <3.1.6, OX Dovecot CE core >=2.3.0 <2.4.5
First fixed revision: OX Dovecot Pro core 3.1.6, OX Dovecot CE core 2.4.5
Discovery date: 2026-04-08
Solution date: 2026-08-26
Disclosure date: 2026-08-26
Researcher credits: tipsennn@yeswehack
CVE: CVE-2026-40018
CVSS: 7.4 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
Details:
MySQL multi-byte escaping wrong. None
Risk:
None No publicly available exploits are known.
Solution:
None
---
Internal reference: DOV-9041
Type: CWE-400 (Uncontrolled Resource Consumption)
Component: core
Report confidence: Confirmed
Solution status: Fixed by vendor
Affected versions: OX Dovecot CE core >=2.4.3 <2.4.5
First fixed revision: OX Dovecot CE core 2.4.5
Discovery date: 2026-04-08
Solution date: 2026-08-26
Disclosure date: 2026-08-26
Researcher credits: ilyar@yeswehack
CVE: CVE-2026-4
Severity
No CVSS data available.
CWE
Assigner
References
5 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Dovecot | Security Advisory |
Affected:
unknown
|
{
"containers": {
"cna": {
"affected": [
{
"product": "Security Advisory",
"vendor": "Dovecot",
"versions": [
{
"status": "affected",
"version": "unknown"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Aki Tuomi"
}
],
"descriptions": [
{
"lang": "en",
"value": "Hi!\n\nWe\u0027re sharing our latest advisory with you and like to thank everyone who contributed in finding and solving those \nvulnerabilities. This advisory will also be published at \nhttps://documentation.open-xchange.com/dovecot/security/advisories/html/2026/oxdc-adv-2026-0003.html\n\n---\n\nClassification: TLP:GREEN\n\nInternal reference: DOV-8476\nType: CWE-403 (Exposure of File Descriptor to Unintended Control Sphere (\u0027File Descriptor Leak\u0027))\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c2.3.22.2, OX Dovecot Pro core \u003e=3.0.0 \u003c3.0.7, OX Dovecot Pro core \n=3.1.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE \ncore 2.4.5\nDiscovery date: 2025-11-25\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nCVE: CVE-2026-33263\nCVSS: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)\n\nDetails:\nsubmission-login: Panic when mail_max_userip_connections is reached: Panic: epoll_ctl(del, 8) failed: Bad file \ndescriptor. When mail_max_userip_connections is set (defaul\nt 10) and reached, submission-login can crash with epoll() panic caused by file descriptor handling issues.\n\nRisk:\nIf running in high-security mode (default for community releases), only the new submission connection gets terminated. \nIf running in high-performance mode (default for Pr\no releases), all connections handled by the submission-login process will be terminated. The crashes can cause failure \nfor user to send a message, or it can cause duplica\nte messages to be sent. If TLS is not used (in the backend server processing the submission), duplicate deliveries \ncannot happen, because the crash can only happen at AUT\nH stage. No publicly available exploits are known.\n\nSolution:\nLimit the number of connections handled by single submission-login process. This has a performance impact though. \nUpdate to non-vulnerable version.\n\n\n\n---\n\n\n\nInternal reference: DOV-8874\nType: CWE-400 (Uncontrolled Resource Consumption)\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c3.0.7, OX Dovecot Pro core \u003e=3.1.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \n\u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 3.1.6, OX Dovecot CE core 2.4.5\nDiscovery date: 2026-03-11\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nResearcher credits: ylwango613@yeswehack\nCVE: CVE-2026-33607\nCVSS: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)\n\nDetails:\nDovecot IMAP LIST match_sub() Exponential Backtracking \u2014 CPU Denial of Service. An attacker that has valid credentials \ncan use IMAP LIST command to consume CPU.\n\nRisk:\nThis can cause degradation or denial of service for IMAP. No publicly available exploits are known.\n\nSolution:\nMonitor system for abnormal CPU usage and kill the offending process and lock account. Alternatively install fixed \nversion.\n\n\n\n---\n\n\n\nInternal reference: DOV-8884\nType: CWE-400 (Uncontrolled Resource Consumption)\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c2.3.22.2, OX Dovecot Pro core \u003e=3.0.0 \u003c3.0.7, OX Dovecot Pro core \n=3.1.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE \ncore 2.4.5\nDiscovery date: 2026-03-13\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nCVE: CVE-2026-27852\nCVSS: 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)\n\nDetails:\nDoS by sending mail with bad header. An attacker that can send mail to a user can craft a message whose headers contain \na very large number of email addresses or MIME par\nameters, which causes excessive memory usage when the message is later parsed.\n\nRisk:\nThe message is still delivered, but reading it over IMAP can exhaust the memory limit of the process and terminate it, \ncausing denial of service for the affected user. No\n publicly available exploits are known.\n\nSolution:\nUpdate to non-vulnerable version.\n\n\n\n---\n\n\n\nInternal reference: DOV-8941\nType: CWE-93 (Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027))\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c2.3.22.2, OX Dovecot Pro core \u003e=3.0.0 \u003c3.0.7, OX Dovecot Pro core \n=3.1.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE \ncore 2.4.5\nDiscovery date: 2026-03-24\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nResearcher credits: thanos_haruki@yeswehack\nCVE: CVE-2026-33606\nCVSS: 4.8 (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N)\n\nDetails:\ndsync: Mail content can cause dsync protocol injection. Mail content stored by a user can be crafted so that it is \ninterpreted as dsync protocol commands when an administ\nrator later runs dsync with the stream protocol, for example during a migration.\n\nRisk:\nInjected commands can modify mailbox state on the destination during migration or replication, including internal \nmailbox attributes that a user should not be able to set\n directly. It can also cause dsync errors. No publicly available exploits are known.\n\nSolution:\nAvoid running dsync with the stream protocol on mailboxes with untrusted content. Update to non-vulnerable version.\n\n\n\n---\n\n\n\nInternal reference: DOV-8947\nType: CWE-655 (Insufficient Psychological Acceptability)\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c2.3.22.2, OX Dovecot Pro core \u003e=3.0.0 \u003c3.0.7, OX Dovecot Pro core \n=3.1.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE \ncore 2.4.5\nDiscovery date: 2026-03-24\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nResearcher credits: heckintosh@yeswehack\nCVE: CVE-2026-33604\nCVSS: 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N)\n\nDetails:\nSMTP Smuggling via Missing Dot-Stuffing After Bare Carriage Return. An attacker that can get Dovecot to relay a \nmessage, for example through Sieve redirect or submission \nrelay, can use a crafted line ending in the message body to bypass the outbound protection that prevents message \ncontent from being interpreted as SMTP commands.\n\nRisk:\nA downstream mail server that hasn\u0027t yet fixed the SMTP smuggling vulnerability can be tricked into treating part of \nthe message body as new SMTP commands, allowing injec\ntion of spoofed email. This is the same vulnerability class as CVE-2023-51764 and CVE-2023-51766. No publicly available \nexploits are known.\n\nSolution:\nWhere you control the receiving mail servers, ensure they reject bare carriage returns in message data. Update to \nnon-vulnerable version.\n\n\n\n---\n\n\n\nInternal reference: DOV-8949\nType: CWE-400 (Uncontrolled Resource Consumption)\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c2.3.22.2, OX Dovecot Pro core \u003e=3.0.0 \u003c3.0.7, OX Dovecot Pro core \n=3.1.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE \ncore 2.4.5\nDiscovery date: 2026-03-24\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nResearcher credits: djvirus@yeswehack\nCVE: CVE-2026-40014\nCVSS: 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)\n\nDetails:\nIMAP THREAD REFERENCES O(N\u00b2) CPU DoS via Crafted References Header (index-thread-links.c). An attacker that can send \nmail to a user can craft a message header that makes \nthe IMAP THREAD command consume CPU disproportionate to the size of the message.\n\nRisk:\nWhen a mail client issues a THREAD command on the affected mailbox, this can cause degradation or denial of service for \nIMAP. No publicly available exploits are known.\n\nSolution:\nMonitor system for abnormal CPU usage, kill the offending process and remove the offending message from the affected \nmailbox. Update to non-vulnerable version.\n\n\n\n---\n\n\n\nInternal reference: DOV-8991\nType: CWE-124 (Buffer Underwrite (\u0027Buffer Underflow\u0027))\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c2.3.22.2, OX Dovecot Pro core \u003e=3.0.0 \u003c3.0.7, OX Dovecot Pro core \n=3.1.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE \ncore 2.4.5\nDiscovery date: 2026-04-02\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nResearcher credits: ilyar@yeswehack\nCVE: CVE-2026-40013\nCVSS: 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)\n\nDetails:\npigeonhole: Stack Buffer Underflow in Pigeonhole ManageSieve CHECKSCRIPT/PUTSCRIPT. An attacker that has valid \ncredentials can submit a Sieve script containing an extreme\n numeric literal, which causes an out-of-bounds write when the ManageSieve service compiles the script.\n\nRisk:\nThis causes memory corruption and an observed crash of the ManageSieve process, resulting in denial of service for \nscript management. This might be able to be used for re\nmote code execution. No publicly available exploits are known.\n\nSolution:\nDisable the ManageSieve service if users do not need remote Sieve script management. Update to non-vulnerable version.\n\n\n\n---\n\n\n\nInternal reference: DOV-8994\nType: CWE-400 (Uncontrolled Resource Consumption)\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c2.3.22.2, OX Dovecot Pro core \u003e=3.0.0 \u003c3.0.7, OX Dovecot Pro core \n=3.1.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.0.7, OX Dovecot Pro core 2.3.22.2, OX Dovecot Pro core 3.1.6, OX Dovecot CE \ncore 2.4.5\nDiscovery date: 2026-04-02\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nResearcher credits: ilyar@yeswehack\nCVE: CVE-2026-33605\nCVSS: 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)\n\nDetails:\nmanagesieve-login: Pre-auth crash. An unauthenticated attacker can crash the ManageSieve login process by sending a \nsmall malformed command before authenticating.\n\nRisk:\nIf running in high-security mode (default for community releases), only the attacker\u0027s own connection is terminated. If \nrunning in high-performance mode (default for Pro \nreleases), all connections handled by the same managesieve-login process are terminated. Repeating the attack can cause \ndenial of service for Sieve script management. No \npublicly available exploits are known.\n\nSolution:\nRestrict network access to the ManageSieve service to trusted clients. Update to non-vulnerable version.\n\n\n\n---\n\n\n\nInternal reference: DOV-9039\nType: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command (\u0027SQL Injection\u0027))\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot Pro core \u003e=2.3.0 \u003c3.1.6, OX Dovecot CE core \u003e=2.3.0 \u003c2.4.5\nFirst fixed revision: OX Dovecot Pro core 3.1.6, OX Dovecot CE core 2.4.5\nDiscovery date: 2026-04-08\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nResearcher credits: tipsennn@yeswehack\nCVE: CVE-2026-40018\nCVSS: 7.4 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)\n\nDetails:\nMySQL multi-byte escaping wrong. None\n\nRisk:\nNone No publicly available exploits are known.\n\nSolution:\nNone\n\n\n\n---\n\n\n\nInternal reference: DOV-9041\nType: CWE-400 (Uncontrolled Resource Consumption)\nComponent: core\nReport confidence: Confirmed\nSolution status: Fixed by vendor\nAffected versions: OX Dovecot CE core \u003e=2.4.3 \u003c2.4.5\nFirst fixed revision: OX Dovecot CE core 2.4.5\nDiscovery date: 2026-04-08\nSolution date: 2026-08-26\nDisclosure date: 2026-08-26\nResearcher credits: ilyar@yeswehack\nCVE: CVE-2026-4"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-1050",
"description": "CWE-1050",
"lang": "en",
"type": "CWE"
},
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CVE-2025-71393 (GCVE-0-2025-71393)
Vulnerability from cvelistv5 – Published: 2026-07-18 13:10 – Updated: 2026-10-08 15:21
VLAI
EPSS
VEX
Title
SurrealDB before 2.2.2 Memory Exhaustion via Nested Functions
Summary
SurrealDB before 2.2.2 with scripting enabled fails to properly enforce recursion limits when native functions contain embedded JavaScript that issues new queries. Authenticated attackers can bypass the recursion limit by chaining native and JavaScript function calls to trigger infinite recursion and exhaust server memory.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-20 17:02 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/surrealdb/surrealdb/security/a… | vendor-advisory |
| https://www.vulncheck.com/advisories/surrealdb-be… | third-party-advisory |
Impacted products
Date Public
2025-04-10 00:00
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CVE-2025-71382 (GCVE-0-2025-71382)
Vulnerability from cvelistv5 – Published: 2026-06-23 17:21 – Updated: 2026-07-14 22:26 X_Open Source
VLAI
EPSS
VEX
Title
MuPDF < 1.27.0-rc1 Stack Exhaustion DoS via EPUB CSS Rendering
Summary
MuPDF before 1.27.0-rc1 contains an uncontrolled recursion vulnerability in the EPUB CSS rendering engine that allows remote attackers to cause a denial of service by supplying a maliciously crafted EPUB file with deeply nested HTML elements and inline CSS styles. The function value_from_inheritable_property() in css-apply.c recurses through the CSS property inheritance chain without a depth limit, exhausting the process stack and causing a crash in any application using MuPDF for EPUB rendering.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 17:36 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ArtifexSoftware/mupdf/releases… | release-notes |
| https://bugs.ghostscript.com/show_bug.cgi?id=708840 | technical-descriptionexploit |
| https://github.com/ArtifexSoftware/mupdf/commit/7… | patch |
| https://www.vulncheck.com/advisories/mupdf-rc1-st… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ArtifexSoftware | mupdf |
Affected:
0 , < 1.27.0-rc1
(custom)
cpe:2.3:a:artifex:mupdf:*:*:*:*:*:*:*:* |
Date Public
2025-09-15 00:00
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CVE-2025-68950 (GCVE-0-2025-68950)
Vulnerability from cvelistv5 – Published: 2025-12-30 16:50 – Updated: 2025-12-30 18:11
VLAI
EPSS
VEX
Title
Magick's failure to limit MVG mutual references forming a loop
Summary
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-12, Magick fails to check for circular references between two MVGs, leading to a stack overflow. This is a DoS vulnerability, and any situation that allows reading the mvg file will be affected. Version 7.1.2-12 fixes the issue.
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-30 18:09 UTC
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/ImageMagick/ImageMagick/securi… | x_refsource_CONFIRM |
| https://github.com/ImageMagick/ImageMagick/commit… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ImageMagick | ImageMagick |
Affected:
< 7.1.2-12
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Mitigation
Implementation
Ensure that an end condition will be reached under all logic conditions. The end condition may include checking against the depth of recursion and exiting with an error if the recursion goes too deep. The complexity of the end condition contributes to the effectiveness of this action.
Mitigation
Implementation
Increase the stack size.
CAPEC-230: Serialized Data with Nested Payloads
Applications often need to transform data in and out of a data format (e.g., XML and YAML) by using a parser. It may be possible for an adversary to inject data that may have an adverse effect on the parser when it is being processed. Many data format languages allow the definition of macro-like structures that can be used to simplify the creation of complex structures. By nesting these structures, causing the data to be repeatedly substituted, an adversary can cause the parser to consume more resources while processing, causing excessive memory consumption and CPU utilization.
CAPEC-231: Oversized Serialized Data Payloads
An adversary injects oversized serialized data payloads into a parser during data processing to produce adverse effects upon the parser such as exhausting system resources and arbitrary code execution.