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180 vulnerabilities found for Checkmk by Checkmk GmbH
CVE-2026-92882 (GCVE-0-2026-92882)
Vulnerability from nvd – Published: 2026-09-22 10:42 – Updated: 2026-09-22 13:05
VLAI
EPSS
VEX
Title
Redact SNMP community, SNMPv3 pass phrases, and IPMI password in host config REST API GET responses
Summary
Insufficiently protected credentials in the host and folder configuration endpoints of the REST API in Checkmk <2.5.0p15, <2.4.0p37, <2.3.0p51 and 2.2.0 (EOL) allows an authenticated user who may view a host's configuration to read stored SNMP community strings, SNMPv3 auth and privacy pass phrases and IPMI passwords in clear text from GET responses, although the setup GUI never displays these values.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 13:05 UTC
CWE
- CWE-522 - Insufficiently Protected Credentials
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/20077 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p15
(semver)
Affected: 2.4.0 , < 2.4.0p37 (semver) Affected: 2.3.0 , < 2.3.0p51 (semver) Affected: 2.2.0 (semver) cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:* |
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CVE-2026-90990 (GCVE-0-2026-90990)
Vulnerability from nvd – Published: 2026-09-22 10:43 – Updated: 2026-09-22 13:04
VLAI
EPSS
VEX
Title
Livestatus injection via monitoring filter values
Summary
Improper neutralization of newlines in filter values in the monitoring host and service list APIs in Checkmk <2.5.0p14 allows an authenticated user to inject additional Livestatus query headers, bypassing object visibility restrictions in count queries to infer information about hosts and services outside their contact groups and occupying web server and Livestatus workers for an attacker-controlled duration.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 13:04 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19604 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p14
(semver)
cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* |
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CVE-2026-77021 (GCVE-0-2026-77021)
Vulnerability from nvd – Published: 2026-09-21 10:57 – Updated: 2026-09-21 19:40
VLAI
EPSS
VEX
Title
Missing decompression size limit in agent receiver allows memory exhaustion via push agent data
Summary
Improper handling of highly compressed data (data amplification) in Checkmk <2.5.0p14, <2.4.0p37, <2.3.0p51 and 2.2.0 (EOL) allows an attacker who controls a host registered for push mode to exhaust the memory of the agent receiver by sending a small zlib compressed payload that decompresses to an arbitrary size.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 14:40 UTC
CWE
- CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22116 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p14
(semver)
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CVE-2026-15937 (GCVE-0-2026-15937)
Vulnerability from nvd – Published: 2026-09-04 08:24 – Updated: 2026-09-04 19:39
VLAI
EPSS
VEX
Title
Agent receiver certificate confusion allows authentication with a certificate issued for another endpoint
Summary
Improper certificate validation in Checkmk <2.5.0p10 allows a relay and a push agent that share the same UUID to reuse each other's mTLS certificate to authenticate against agent receiver endpoints in either direction, because the endpoints do not verify that the certificate was issued by their own root certificate.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 19:39 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19735 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p10
(semver)
cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* |
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CVE-2026-17548 (GCVE-0-2026-17548)
Vulnerability from nvd – Published: 2026-08-25 08:35 – Updated: 2026-08-25 19:48
VLAI
EPSS
VEX
Title
Missing authorization for viewing background jobs
Summary
Missing authorization in Checkmk <2.5.0p12, <2.4.0p36, <2.3.0p50 and all 2.2.0 versions allows an authenticated user who knows the ID of a background job to view that job's status and results.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 19:48 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22115 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p12
(semver)
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CVE-2026-15576 (GCVE-0-2026-15576)
Vulnerability from nvd – Published: 2026-08-21 11:10 – Updated: 2026-08-21 11:53
VLAI
EPSS
VEX
Title
Agent receiver accepts mTLS requests without a client certificate
Summary
Improper authentication in the agent receiver of Checkmk <2.5.0p10 allows an unauthenticated remote attacker to bypass mutual TLS client certificate verification of relay endpoints by supplying a fixed placeholder identity in the request URL, resulting in limited impact on integrity and availability. Only the Cloud, Ultimate and Ultimate MT editions are affected, as other editions do not expose relay endpoints.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 11:53 UTC
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/20174 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p10
(semver)
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CVE-2026-7485 (GCVE-0-2026-7485)
Vulnerability from nvd – Published: 2026-08-20 12:12 – Updated: 2026-08-26 14:16
VLAI
EPSS
VEX
Title
Frozen BI aggregations leak host and service names to unauthorized users
Summary
Incorrect authorization in frozen BI aggregations in Checkmk <2.5.0p2, <2.4.0p29, <2.3.0p47, and all 2.2.0 versions allows an authenticated user with restricted host and service visibility to learn the names and the existence of hosts and services they are not authorized to see.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 13:27 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/16917 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p2
(semver)
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CVE-2026-15227 (GCVE-0-2026-15227)
Vulnerability from nvd – Published: 2026-07-31 12:21 – Updated: 2026-07-31 19:50
VLAI
EPSS
VEX
Title
Missing Authorization Allows Editing of Foreign Reports
Summary
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Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 19:50 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/20003 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p10
(semver)
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CVE-2026-8593 (GCVE-0-2026-8593)
Vulnerability from nvd – Published: 2026-07-21 07:20 – Updated: 2026-07-21 12:16
VLAI
EPSS
VEX
Title
Fix Business Intelligence API Pack permission
Summary
Improper permission enforcement in Checkmk versions 2.5.0 before 2.5.0p9, 2.4.0 before 2.4.0p34, 2.3.0 before 2.3.0p49, and 2.2.0 (EOL) allows users without permissions to view and modify BI packs and rules
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-21 12:16 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/16918 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p9
(semver)
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CVE-2026-14852 (GCVE-0-2026-14852)
Vulnerability from nvd – Published: 2026-07-14 09:26 – Updated: 2026-07-29 19:26
VLAI
EPSS
VEX
Title
mk_sap_hana: Privilege escalation via crafted sapstartsrv process name
Summary
Privilege escalation in Checkmk versions 2.5.0 before 2.5.0p9, 2.4.0 before 2.4.0p34, 2.3.0 before 2.3.0p49, and 2.2.0 (EOL) allows a local unprivileged user to execute arbitrary commands as root by starting a process crafted to look like a SAP HANA instance. Without an explicit database configuration, the mk_sap_hana agent plugin derives instance identifiers from the process list and uses them to build a command executed with elevated privileges (requires the plugin to run as root with RUNAS=agent).
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 04:00 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/20104 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p9
(semver)
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CVE-2026-9549 (GCVE-0-2026-9549)
Vulnerability from nvd – Published: 2026-06-08 12:07 – Updated: 2026-06-08 13:02
VLAI
EPSS
VEX
Title
Fix XSS in service discovery active check output
Summary
Stored cross-site scripting in the service discovery active check output in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an administrator who can configure active or custom checks to inject malicious HTML or JavaScript into check output that executes in the browser of an admin or a user with host read permissions when they run the check on the service discovery page.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-08 13:02 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/17993 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p5
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CVE-2026-8833 (GCVE-0-2026-8833)
Vulnerability from nvd – Published: 2026-06-08 12:06 – Updated: 2026-06-08 13:02
VLAI
EPSS
VEX
Title
XSS in urls
Summary
Improper neutralization of HTML-encoded characters in the URL validation function in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an authenticated user to bypass URL validation and inject malicious URLs such as javascript: URIs, resulting in cross-site scripting when another user interacts with the crafted link.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-08 13:02 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/20002 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p5
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CVE-2026-8078 (GCVE-0-2026-8078)
Vulnerability from nvd – Published: 2026-06-08 12:06 – Updated: 2026-06-08 13:03
VLAI
EPSS
VEX
Title
Fix stored XSS in global settings change log
Summary
Stored cross-site scripting in the global settings change log in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an administrator who can change global settings to store malicious HTML or JavaScript in changelog messages that executes in other users' browsers when they view the Activate Changes page or Audit log.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-08 13:03 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/17992 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p5
(semver)
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CVE-2026-7765 (GCVE-0-2026-7765)
Vulnerability from nvd – Published: 2026-06-08 12:06 – Updated: 2026-06-08 13:04
VLAI
EPSS
VEX
Title
User Messages widget leaked issuer messages on shared dashboards
Summary
Incorrect authorization in the User Messages dashboard widget in Checkmk <2.5.0p5 causes the message-fetching endpoints to return the dashboard creator's messages rather than the viewer's, allowing an attacker who knows a valid public dashboard share token to read the issuer's personal messages by sending requests to the underlying endpoint, even without a User Messages widget present.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-08 13:04 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19815 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p5
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CVE-2026-7186 (GCVE-0-2026-7186)
Vulnerability from nvd – Published: 2026-06-08 12:05 – Updated: 2026-06-08 13:15
VLAI
EPSS
VEX
Title
Fix stored XSS in URL dashboard widget via dangerous URI schemes
Summary
Stored cross-site scripting in the URL dashboard widget in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows a user with dashboard editing permissions to store a URL with a dangerous URI scheme such as javascript: that executes scripts in other users' browsers when they view the dashboard.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-08 13:15 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/17991 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p5
(semver)
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CVE-2026-90990 (GCVE-0-2026-90990)
Vulnerability from cvelistv5 – Published: 2026-09-22 10:43 – Updated: 2026-09-22 13:04
VLAI
EPSS
VEX
Title
Livestatus injection via monitoring filter values
Summary
Improper neutralization of newlines in filter values in the monitoring host and service list APIs in Checkmk <2.5.0p14 allows an authenticated user to inject additional Livestatus query headers, bypassing object visibility restrictions in count queries to infer information about hosts and services outside their contact groups and occupying web server and Livestatus workers for an attacker-controlled duration.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 13:04 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19604 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p14
(semver)
cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* |
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CVE-2026-92882 (GCVE-0-2026-92882)
Vulnerability from cvelistv5 – Published: 2026-09-22 10:42 – Updated: 2026-09-22 13:05
VLAI
EPSS
VEX
Title
Redact SNMP community, SNMPv3 pass phrases, and IPMI password in host config REST API GET responses
Summary
Insufficiently protected credentials in the host and folder configuration endpoints of the REST API in Checkmk <2.5.0p15, <2.4.0p37, <2.3.0p51 and 2.2.0 (EOL) allows an authenticated user who may view a host's configuration to read stored SNMP community strings, SNMPv3 auth and privacy pass phrases and IPMI passwords in clear text from GET responses, although the setup GUI never displays these values.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 13:05 UTC
CWE
- CWE-522 - Insufficiently Protected Credentials
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/20077 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
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Affected:
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(semver)
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CVE-2026-77021 (GCVE-0-2026-77021)
Vulnerability from cvelistv5 – Published: 2026-09-21 10:57 – Updated: 2026-09-21 19:40
VLAI
EPSS
VEX
Title
Missing decompression size limit in agent receiver allows memory exhaustion via push agent data
Summary
Improper handling of highly compressed data (data amplification) in Checkmk <2.5.0p14, <2.4.0p37, <2.3.0p51 and 2.2.0 (EOL) allows an attacker who controls a host registered for push mode to exhaust the memory of the agent receiver by sending a small zlib compressed payload that decompresses to an arbitrary size.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 14:40 UTC
CWE
- CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22116 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p14
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CVE-2026-15937 (GCVE-0-2026-15937)
Vulnerability from cvelistv5 – Published: 2026-09-04 08:24 – Updated: 2026-09-04 19:39
VLAI
EPSS
VEX
Title
Agent receiver certificate confusion allows authentication with a certificate issued for another endpoint
Summary
Improper certificate validation in Checkmk <2.5.0p10 allows a relay and a push agent that share the same UUID to reuse each other's mTLS certificate to authenticate against agent receiver endpoints in either direction, because the endpoints do not verify that the certificate was issued by their own root certificate.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 19:39 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19735 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p10
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CVE-2026-17548 (GCVE-0-2026-17548)
Vulnerability from cvelistv5 – Published: 2026-08-25 08:35 – Updated: 2026-08-25 19:48
VLAI
EPSS
VEX
Title
Missing authorization for viewing background jobs
Summary
Missing authorization in Checkmk <2.5.0p12, <2.4.0p36, <2.3.0p50 and all 2.2.0 versions allows an authenticated user who knows the ID of a background job to view that job's status and results.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 19:48 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/22115 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p12
(semver)
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CVE-2026-15576 (GCVE-0-2026-15576)
Vulnerability from cvelistv5 – Published: 2026-08-21 11:10 – Updated: 2026-08-21 11:53
VLAI
EPSS
VEX
Title
Agent receiver accepts mTLS requests without a client certificate
Summary
Improper authentication in the agent receiver of Checkmk <2.5.0p10 allows an unauthenticated remote attacker to bypass mutual TLS client certificate verification of relay endpoints by supplying a fixed placeholder identity in the request URL, resulting in limited impact on integrity and availability. Only the Cloud, Ultimate and Ultimate MT editions are affected, as other editions do not expose relay endpoints.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 11:53 UTC
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/20174 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p10
(semver)
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CVE-2026-7485 (GCVE-0-2026-7485)
Vulnerability from cvelistv5 – Published: 2026-08-20 12:12 – Updated: 2026-08-26 14:16
VLAI
EPSS
VEX
Title
Frozen BI aggregations leak host and service names to unauthorized users
Summary
Incorrect authorization in frozen BI aggregations in Checkmk <2.5.0p2, <2.4.0p29, <2.3.0p47, and all 2.2.0 versions allows an authenticated user with restricted host and service visibility to learn the names and the existence of hosts and services they are not authorized to see.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 13:27 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/16917 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p2
(semver)
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CVE-2026-15227 (GCVE-0-2026-15227)
Vulnerability from cvelistv5 – Published: 2026-07-31 12:21 – Updated: 2026-07-31 19:50
VLAI
EPSS
VEX
Title
Missing Authorization Allows Editing of Foreign Reports
Summary
Missing authorization in Checkmk <2.5.0p10, <2.4.0p35, <2.3.0p49, and 2.2.0 (EOL) allows an authenticated user lacking the "Edit foreign Reports" permission to modify reports owned by other users.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 19:50 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/20003 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p10
(semver)
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CVE-2026-8593 (GCVE-0-2026-8593)
Vulnerability from cvelistv5 – Published: 2026-07-21 07:20 – Updated: 2026-07-21 12:16
VLAI
EPSS
VEX
Title
Fix Business Intelligence API Pack permission
Summary
Improper permission enforcement in Checkmk versions 2.5.0 before 2.5.0p9, 2.4.0 before 2.4.0p34, 2.3.0 before 2.3.0p49, and 2.2.0 (EOL) allows users without permissions to view and modify BI packs and rules
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-21 12:16 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/16918 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p9
(semver)
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CVE-2026-14852 (GCVE-0-2026-14852)
Vulnerability from cvelistv5 – Published: 2026-07-14 09:26 – Updated: 2026-07-29 19:26
VLAI
EPSS
VEX
Title
mk_sap_hana: Privilege escalation via crafted sapstartsrv process name
Summary
Privilege escalation in Checkmk versions 2.5.0 before 2.5.0p9, 2.4.0 before 2.4.0p34, 2.3.0 before 2.3.0p49, and 2.2.0 (EOL) allows a local unprivileged user to execute arbitrary commands as root by starting a process crafted to look like a SAP HANA instance. Without an explicit database configuration, the mk_sap_hana agent plugin derives instance identifiers from the process list and uses them to build a command executed with elevated privileges (requires the plugin to run as root with RUNAS=agent).
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 04:00 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/20104 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p9
(semver)
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CVE-2026-9549 (GCVE-0-2026-9549)
Vulnerability from cvelistv5 – Published: 2026-06-08 12:07 – Updated: 2026-06-08 13:02
VLAI
EPSS
VEX
Title
Fix XSS in service discovery active check output
Summary
Stored cross-site scripting in the service discovery active check output in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an administrator who can configure active or custom checks to inject malicious HTML or JavaScript into check output that executes in the browser of an admin or a user with host read permissions when they run the check on the service discovery page.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-08 13:02 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/17993 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p5
(semver)
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CVE-2026-8833 (GCVE-0-2026-8833)
Vulnerability from cvelistv5 – Published: 2026-06-08 12:06 – Updated: 2026-06-08 13:02
VLAI
EPSS
VEX
Title
XSS in urls
Summary
Improper neutralization of HTML-encoded characters in the URL validation function in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an authenticated user to bypass URL validation and inject malicious URLs such as javascript: URIs, resulting in cross-site scripting when another user interacts with the crafted link.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-08 13:02 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/20002 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
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CVE-2026-8078 (GCVE-0-2026-8078)
Vulnerability from cvelistv5 – Published: 2026-06-08 12:06 – Updated: 2026-06-08 13:03
VLAI
EPSS
VEX
Title
Fix stored XSS in global settings change log
Summary
Stored cross-site scripting in the global settings change log in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an administrator who can change global settings to store malicious HTML or JavaScript in changelog messages that executes in other users' browsers when they view the Activate Changes page or Audit log.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-08 13:03 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/17992 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
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CVE-2026-7765 (GCVE-0-2026-7765)
Vulnerability from cvelistv5 – Published: 2026-06-08 12:06 – Updated: 2026-06-08 13:04
VLAI
EPSS
VEX
Title
User Messages widget leaked issuer messages on shared dashboards
Summary
Incorrect authorization in the User Messages dashboard widget in Checkmk <2.5.0p5 causes the message-fetching endpoints to return the dashboard creator's messages rather than the viewer's, allowing an attacker who knows a valid public dashboard share token to read the issuer's personal messages by sending requests to the underlying endpoint, even without a User Messages widget present.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-08 13:04 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19815 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p5
(semver)
cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:* |
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CVE-2026-7186 (GCVE-0-2026-7186)
Vulnerability from cvelistv5 – Published: 2026-06-08 12:05 – Updated: 2026-06-08 13:15
VLAI
EPSS
VEX
Title
Fix stored XSS in URL dashboard widget via dangerous URI schemes
Summary
Stored cross-site scripting in the URL dashboard widget in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows a user with dashboard editing permissions to store a URL with a dangerous URI scheme such as javascript: that executes scripts in other users' browsers when they view the dashboard.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-08 13:15 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/17991 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0p5
(semver)
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