Common Weakness Enumeration
CWE-416
AllowedUse After Free
Abstraction: Variant · Status: Stable
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
12198 vulnerabilities reference this CWE, most recent first.
CVE-2026-8336 (GCVE-0-2026-8336)
Vulnerability from cvelistv5 – Published: 2026-05-13 00:16 – Updated: 2026-05-15 16:16
VLAI
EPSS
VEX
Title
Post-authentication use-after-free error in $_internalJsEmit and mapreduce commands
Summary
After invoking $_internalJsEmit, which is not intended to be directly accessible, or mapreduce command’s map function in a certain way, an authenticated user can subsequently crash mongod when the server-side JavaScript engine (through $where, $function, mapreduce reduce stage, etc.) is used also in a specific way, resulting in a post-authentication denial-of-service.
This issue impacts MongoDB Server v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 14:35 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://jira.mongodb.org/browse/SERVER-121610 | issue-tracking |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB, Inc. | MongoDB Server |
Affected:
8.2 , < 8.2.9
(custom)
Affected: 8.3 , < 8.3.2 (custom) |
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CVE-2026-8201 (GCVE-0-2026-8201)
Vulnerability from cvelistv5 – Published: 2026-05-13 00:12 – Updated: 2026-05-13 14:34
VLAI
EPSS
VEX
Title
Use-After-Free in MongoDB FLE Query Analysis When Processing Positional Projections on Encrypted Fields
Summary
A use-after-free vulnerability exists in MongoDB's Field-Level Encryption (FLE) query analysis component, affecting client-side uses of mongocryptd and crypt_shared. Triggering this vulnerability requires control over the structure of a client's FLE-related query.
This issue impacts MongoDB Server’s mongocryptd component v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.
Severity
6.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 14:34 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://jira.mongodb.org/browse/SERVER-122032 | issue-tracking |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB, Inc. | MongoDB Server |
Affected:
7.0 , < 7.0.34
(custom)
Affected: 8.0 , < 8.0.23 (custom) Affected: 8.2 , < 8.2.9 (custom) Affected: 8.3 , < 8.3.2 (custom) |
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CVE-2026-7531 (GCVE-0-2026-7531)
Vulnerability from cvelistv5 – Published: 2026-06-25 20:01 – Updated: 2026-06-26 13:17
VLAI
EPSS
VEX
Title
Use-after-free in PQC hybrid key-share handling
Summary
Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 (released in 5.9.1): a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-26 13:17 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
2 references
Impacted products
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CVE-2026-7477 (GCVE-0-2026-7477)
Vulnerability from cvelistv5 – Published: 2026-09-08 14:20 – Updated: 2026-09-10 18:05
VLAI
EPSS
VEX
Title
Mali GPU Kernel Driver allows access to already freed memory
Summary
Use After Free vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver allows a local non-privileged user process to perform valid GPU memory processing operations to access already freed memory.
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Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 18:04 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Arm Ltd | Bifrost GPU Kernel Driver |
Affected:
r44p0 , ≤ r49p4
(patch)
Affected: r50p0 , ≤ r51p0 (patch) Affected: r54p1 , ≤ r54p2 (patch) |
|
| Arm Ltd | Valhall GPU Kernel Driver |
Affected:
r44p0 , ≤ r49p5
(patch)
Affected: r50p0 , ≤ r54p3 (patch) |
|
| Arm Ltd | Arm 5th Gen GPU Architecture Kernel Driver |
Affected:
r44p0 , ≤ r49p5
(patch)
Affected: r50p0 , ≤ r54p3 (patch) Affected: r55p0 (patch) Unaffected: r56p0 (patch) |
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CVE-2026-7476 (GCVE-0-2026-7476)
Vulnerability from cvelistv5 – Published: 2026-09-08 14:20 – Updated: 2026-09-10 18:14
VLAI
EPSS
VEX
Title
Mali GPU Kernel Driver allows access to already freed memory
Summary
Use After Free vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver allows a local non-privileged user process to perform improper GPU memory processing operations to access already freed memory.
This issue affects Bifrost GPU Kernel Driver: from r49p3 through r49p5, r51p0, from r54p1 through r54p2; Valhall GPU Kernel Driver: from r49p3 through r49p5, from r51p0 through r54p3, r55p0; Arm 5th Gen GPU Architecture Kernel Driver: from r49p3 through r49p5, from r51p0 through r54p3, r55p0.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 18:13 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Arm Ltd | Bifrost GPU Kernel Driver |
Affected:
r49p3 , ≤ r49p5
(patch)
Affected: r51p0 (patch) Affected: r54p1 , ≤ r54p2 (patch) |
|
| Arm Ltd | Valhall GPU Kernel Driver |
Affected:
r49p3 , ≤ r49p5
(patch)
Affected: r51p0 , ≤ r54p3 (patch) Affected: r55p0 (patch) Unaffected: r56p0 (patch) |
|
| Arm Ltd | Arm 5th Gen GPU Architecture Kernel Driver |
Affected:
r49p3 , ≤ r49p5
(patch)
Affected: r51p0 , ≤ r54p3 (patch) Affected: r55p0 (patch) Unaffected: r56p0 (patch) |
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CVE-2026-7261 (GCVE-0-2026-7261)
Vulnerability from cvelistv5 – Published: 2026-05-10 04:07 – Updated: 2026-05-11 13:14
VLAI
EPSS
VEX
Title
SoapServer session-persisted object use-after-free via SOAP header fault
Summary
In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, when SoapServer is configured with SOAP_PERSISTENCE_SESSION, the handler object is persisted across requests via session storage. However, in the case SOAP requests results in an error, the persistance is handled incorrectly, resulting in freeing the object while keeping a pointer to it, which may lead to use-after-free. This may lead to memory corruption, information disclosure, or process crashes, with confidentiality, integrity, and availability impact on the vulnerable system.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-11 13:14 UTC
CWE
- CWE-416 - Use after free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/php/php-src/security/advisorie… | vendor-advisory |
Impacted products
Date Public
2026-05-07 00:00
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CVE-2026-7111 (GCVE-0-2026-7111)
Vulnerability from cvelistv5 – Published: 2026-04-29 14:22 – Updated: 2026-06-25 19:35
VLAI
EPSS
VEX
Title
Text::CSV_XS versions before 1.62 for Perl have a use-after-free when registered callbacks extend the Perl argument stack, which may enable type confusion or memory corruption
Summary
Text::CSV_XS versions before 1.62 for Perl have a use-after-free when registered callbacks extend the Perl argument stack, which may enable type confusion or memory corruption.
The Parse, print, getline, and getline_all methods invoke registered callbacks (for example after_parse, before_print, or on_error) and cache the Perl argument stack pointer across the call. If a callback extends the argument stack enough to trigger a reallocation, the return value is written through the stale pointer into the freed buffer, and the caller reads the original $self argument as the return value instead.
Calling code that expects parsed data from getline_all receives the Text::CSV_XS object in its place, leading to logic errors or crashes. Text::CSV_XS objects used without any registered callbacks are not affected.
Severity
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-29 17:49 UTC
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HMBRAND | Text::CSV_XS |
Affected:
0 , < 1.62
(custom)
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CVE-2026-6928 (GCVE-0-2026-6928)
Vulnerability from cvelistv5 – Published: 2026-09-23 20:54 – Updated: 2026-09-25 03:55
VLAI
EPSS
VEX
Title
Multiple Vulnerabilities in IBM Concert Software
Summary
IBM Concert 1.0.0 through 3.0.0 references or accesses memory after it has been freed. This allows an attacker who can influence program execution or input may exploit this condition to corrupt memory, cause application crashes, or execute arbitrary code.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-24 00:00 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7288830 | vendor-advisorypatch |
Impacted products
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CVE-2026-6722 (GCVE-0-2026-6722)
Vulnerability from cvelistv5 – Published: 2026-05-10 04:19 – Updated: 2026-07-23 12:08
VLAI
EPSS
VEX
Title
Use-After-Free in SOAP using Apache map
Summary
In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the SOAP extension's object deduplication mechanism stores pointers to PHP objects in a global map without incrementing their reference counts. When an apache:Map node contains duplicate keys, processing the second entry overwrites the first in the temporary result map, freeing the original PHP object while its stale pointer remains in the map. A subsequent href reference to the freed node can copy the dangling pointer into the result. As PHP string allocations can reclaim the freed memory region, an attacker with control over the SOAP request body can exploit this use-after-free to achieve remote code execution.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-11 00:00 UTC
Assigner
References
11 references
| URL | Tags |
|---|---|
| https://github.com/php/php-src/security/advisorie… | vendor-advisory |
| https://access.redhat.com/security/cve/CVE-2026-6722 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2468560 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:23388 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22649 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:34354 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22305 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22142 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22143 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:33449 | vendor-advisoryx_refsource_REDHAT |
Impacted products
10 products
| Vendor | Product | Version | |
|---|---|---|---|
| PHP Group | PHP |
Affected:
8.2.* , < 8.2.31
(semver)
Affected: 8.3.* , < 8.3.31 (semver) Affected: 8.4.* , < 8.4.21 (semver) Affected: 8.5.* , < 8.5.6 (semver) |
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:8.4.21-1.el10_2 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:8.3.31-1.el10_2 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
8100020260521052503.f7998665 , < *
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cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
8100020260604072603.f7998665 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
9080020260521113736.9 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
9080020260521080715.9 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:8.0.30-6.el9_8 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| 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
|
Date Public
2026-05-07 00:00
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CVE-2026-6653 (GCVE-0-2026-6653)
Vulnerability from cvelistv5 – Published: 2026-06-22 12:40 – Updated: 2026-06-22 15:51
VLAI
EPSS
VEX
Title
libxml2: Use after free in xmlParseInternalSubset via improper entity resolution handling
Summary
Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 15:51 UTC
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://bugs.launchpad.net/ubuntu/+source/libxml2… | issue-tracking |
| https://gitlab.gnome.org/GNOME/libxml2/-/work_ite… | issue-tracking |
Impacted products
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Mitigation
Architecture and Design
Strategy: Language Selection
Choose a language that provides automatic memory management.
Mitigation
Implementation
Strategy: Attack Surface Reduction
When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
No CAPEC attack patterns related to this CWE.