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160 vulnerabilities found for Checkmk by Checkmk GmbH

CVE-2026-9549 (GCVE-0-2026-9549)

Vulnerability from nvd – Published: 2026-06-08 12:07 – Updated: 2026-06-08 12:07
VLAI
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
4.8 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
URL Tags
https://checkmk.com/werk/17993 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0p5 (semver)
Affected: 2.4.0 , < 2.4.0p31 (semver)
Affected: 2.3.0 , < 2.3.0p48 (semver)
Affected: 2.2.0 (semver)
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CVE-2026-8833 (GCVE-0-2026-8833)

Vulnerability from nvd – Published: 2026-06-08 12:06 – Updated: 2026-06-08 12:06
VLAI
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
8.5 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
URL Tags
https://checkmk.com/werk/20002 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0p5 (semver)
Affected: 2.4.0 , < 2.4.0p31 (semver)
Affected: 2.3.0 , < 2.3.0p48 (semver)
Affected: 2.2.0 (semver)
Create a notification for this product.
Credits
Arvato Systems Offensive Security
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To clipboard 

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CVE-2026-8078 (GCVE-0-2026-8078)

Vulnerability from nvd – Published: 2026-06-08 12:06 – Updated: 2026-06-08 12:06
VLAI
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
4.8 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
URL Tags
https://checkmk.com/werk/17992 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0p5 (semver)
Affected: 2.4.0 , < 2.4.0p31 (semver)
Affected: 2.3.0 , < 2.3.0p48 (semver)
Affected: 2.2.0 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-7765 (GCVE-0-2026-7765)

Vulnerability from nvd – Published: 2026-06-08 12:06 – Updated: 2026-06-08 12:06
VLAI
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
6.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-863 - Incorrect Authorization
Assigner
References
URL Tags
https://checkmk.com/werk/19815 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0p5 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-7186 (GCVE-0-2026-7186)

Vulnerability from nvd – Published: 2026-06-08 12:05 – Updated: 2026-06-08 12:05
VLAI
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
8.5 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
URL Tags
https://checkmk.com/werk/17991 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0p5 (semver)
Affected: 2.4.0 , < 2.4.0p31 (semver)
Affected: 2.3.0 , < 2.3.0p48 (semver)
Affected: 2.2.0 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2024-47091 (GCVE-0-2024-47091)

Vulnerability from nvd – Published: 2026-05-13 08:35 – Updated: 2026-05-13 12:01
VLAI
Title
Privilege escalation via mk_mysql agent plugin on Windows
Summary
Privilege escalation in the mk_mysql agent plugin on Windows in Checkmk <2.4.0p29, <2.3.0p47, and 2.2.0 (EOL) allows a local unprivileged user able to create a Windows service whose name matches 'MySQL' or 'MariaDB' (or with write access to a binary referenced by such a service) to execute arbitrary code in the context of the Checkmk agent service, which typically runs as SYSTEM.
Severity
5.2 (Medium)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-427 - Uncontrolled Search Path Element
Assigner
References
URL Tags
https://checkmk.com/werk/19198 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.4.0 , < 2.4.0p29 (semver)
Affected: 2.3.0 , < 2.3.0p47 (semver)
Affected: 2.2.0 (semver)
Create a notification for this product.
Show details on NVD website
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CVE-2026-33457 (GCVE-0-2026-33457)

Vulnerability from nvd – Published: 2026-04-10 08:31 – Updated: 2026-04-14 13:29
VLAI
Title
Potential livestatus injection in prediction graph page
Summary
Livestatus injection in the prediction graph page in Checkmk <2.5.0b4, <2.4.0p26, and <2.3.0p47 allows an authenticated user to inject arbitrary Livestatus commands via a crafted service name parameter due to insufficient sanitization of the service description value.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-140 - Improper Neutralization of Delimiters
Assigner
References
URL Tags
https://checkmk.com/werk/17990 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0b4 (semver)
Affected: 2.4.0 , < 2.4.0p26 (semver)
Affected: 2.3.0 , < 2.3.0p47 (semver)
Create a notification for this product.
Show details on NVD website
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CVE-2026-33456 (GCVE-0-2026-33456)

Vulnerability from nvd – Published: 2026-04-10 08:31 – Updated: 2026-04-14 13:29
VLAI
Title
Potential livestatus injection in notification test
Summary
Livestatus injection in the notification test mode in Checkmk <2.5.0b4 and <2.4.0p26 allows an authenticated user with access to the notification test page to inject arbitrary Livestatus commands via a crafted service description.
Severity
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-140 - Improper Neutralization of Delimiters
Assigner
References
URL Tags
https://checkmk.com/werk/17989 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0b4 (semver)
Affected: 2.4.0 , < 2.4.0p26 (semver)
Create a notification for this product.
Show details on NVD website
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CVE-2026-33455 (GCVE-0-2026-33455)

Vulnerability from nvd – Published: 2026-04-10 08:30 – Updated: 2026-04-14 13:30
VLAI
Title
Livestatus injection in monitoring quicksearch
Summary
Livestatus injection in the monitoring quicksearch in Checkmk <2.5.0b4 allows an authenticated attacker to inject livestatus commands via the search query due to insufficient input sanitization in search filter plugins.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-140 - Improper Neutralization of Delimiters
Assigner
References
URL Tags
https://checkmk.com/werk/17988 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0b4 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-3466 (GCVE-0-2026-3466)

Vulnerability from nvd – Published: 2026-04-07 12:08 – Updated: 2026-04-22 12:26
VLAI
Title
Cross-site scripting in dashlet title
Summary
Insufficient sanitization of dashboard dashlet title links in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0 allows an attacker with dashboard creation privileges to perform stored cross-site scripting (XSS) attacks by tricking a victim into clicking a crafted dashlet title link on a shared dashboard.
Severity
8.5 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.2.0 (semver)
Affected: 2.3.0 , < 2.3.0p46 (semver)
Affected: 2.4.0 , < 2.4.0p25 (semver)
Affected: 2.5.0b1 , < 2.5.0 (semver)
Create a notification for this product.
Credits
Alex Williams (Pellera Technologies)
Show details on NVD website
To clipboard 

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CVE-2025-39666 (GCVE-0-2025-39666)

Vulnerability from nvd – Published: 2026-04-07 12:09 – Updated: 2026-04-07 13:18
VLAI
Title
omd: Local privilege escalation when executing omd commands as root
Summary
Local privilege escalation in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0b3 allows a site user to escalate their privileges to root, by manipulating files in the site context that are processed when the `omd` administrative command is run by root.
Severity
9.3 (Critical)
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-426 - Untrusted Search Path
  • CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
Assigner
References
URL Tags
https://checkmk.com/werk/18891 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.2.0 (semver)
Affected: 2.3.0 , < 2.3.0p46 (semver)
Affected: 2.4.0 , < 2.4.0p25 (semver)
Affected: 2.5.0b1 , < 2.5.0b3 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-24096 (GCVE-0-2026-24096)

Vulnerability from nvd – Published: 2026-04-01 10:07 – Updated: 2026-04-01 12:37
VLAI
Title
Insufficient permission validation on multiple REST API Quick Setup endpoints
Summary
Insufficient permission validation on multiple REST API Quick Setup endpoints in Checkmk 2.5.0 (beta) before version 2.5.0b2 and 2.4.0 before version 2.4.0p25 allows low-privileged users to perform unauthorized actions or obtain sensitive information
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-280 - Improper Handling of Insufficient Permissions or Privileges
Assigner
References
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0b1 , < 2.5.0b2 (semver)
Affected: 2.4.0 , < 2.4.0p25 (semver)
Create a notification for this product.
Credits
PS Positive Security GmbH
Show details on NVD website
To clipboard 

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CVE-2026-33276 (GCVE-0-2026-33276)

Vulnerability from nvd – Published: 2026-03-31 13:44 – Updated: 2026-03-31 15:45
VLAI
Title
XSS in Unified Search via Unescaped Host/Service Names
Summary
Stored cross-site scripting (XSS) in Checkmk 2.5.0 (beta) before 2.5.0b2 allows authenticated users with permission to create hosts or services to execute arbitrary JavaScript in the browsers of other users performing searches in the Unified Search feature.
Severity
8.6 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0b1 , < 2.5.0b2 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-20915 (GCVE-0-2026-20915)

Vulnerability from nvd – Published: 2026-03-31 13:51 – Updated: 2026-03-31 17:15
VLAI
Title
Stored cross-site scripting in Pending Changes sidebar
Summary
Stored cross-site scripting (XSS) in Checkmk version 2.5.0 (beta) before 2.5.0b2 allows authenticated users with permission to create pending changes to inject malicious JavaScript into the Pending Changes sidebar, which will execute in the browsers of other users viewing the sidebar.
Severity
8.5 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
URL Tags
https://checkmk.com/werk/19526 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0b1 , < 2.5.0b2 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-64998 (GCVE-0-2025-64998)

Vulnerability from nvd – Published: 2026-03-24 11:25 – Updated: 2026-03-25 03:55
VLAI
Title
Session hijacking via exposed session signing secret in distributed Checkmk setups
Summary
Exposure of session signing secret in Checkmk <2.4.0p23, <2.3.0p45 and 2.2.0 allows an administrator of a remote site with config sync enabled to hijack sessions on the central site by forging session cookies.
Severity
7.3 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-522 - Insufficiently Protected Credentials
Assigner
References
URL Tags
https://checkmk.com/werk/18954 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.4.0 , < 2.4.0p23 (semver)
Affected: 2.3.0 , < 2.3.0p45 (semver)
Affected: 2.2.0 (semver)
Create a notification for this product.
Credits
Lisa Gnedt (SBA Research)
Show details on NVD website
To clipboard 

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CVE-2026-9549 (GCVE-0-2026-9549)

Vulnerability from cvelistv5 – Published: 2026-06-08 12:07 – Updated: 2026-06-08 12:07
VLAI
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
4.8 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
URL Tags
https://checkmk.com/werk/17993 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0p5 (semver)
Affected: 2.4.0 , < 2.4.0p31 (semver)
Affected: 2.3.0 , < 2.3.0p48 (semver)
Affected: 2.2.0 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-8833 (GCVE-0-2026-8833)

Vulnerability from cvelistv5 – Published: 2026-06-08 12:06 – Updated: 2026-06-08 12:06
VLAI
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
8.5 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
URL Tags
https://checkmk.com/werk/20002 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0p5 (semver)
Affected: 2.4.0 , < 2.4.0p31 (semver)
Affected: 2.3.0 , < 2.3.0p48 (semver)
Affected: 2.2.0 (semver)
Create a notification for this product.
Credits
Arvato Systems Offensive Security
Show details on NVD website
To clipboard 

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CVE-2026-8078 (GCVE-0-2026-8078)

Vulnerability from cvelistv5 – Published: 2026-06-08 12:06 – Updated: 2026-06-08 12:06
VLAI
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
4.8 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
URL Tags
https://checkmk.com/werk/17992 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0p5 (semver)
Affected: 2.4.0 , < 2.4.0p31 (semver)
Affected: 2.3.0 , < 2.3.0p48 (semver)
Affected: 2.2.0 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-7765 (GCVE-0-2026-7765)

Vulnerability from cvelistv5 – Published: 2026-06-08 12:06 – Updated: 2026-06-08 12:06
VLAI
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
6.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-863 - Incorrect Authorization
Assigner
References
URL Tags
https://checkmk.com/werk/19815 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0p5 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-7186 (GCVE-0-2026-7186)

Vulnerability from cvelistv5 – Published: 2026-06-08 12:05 – Updated: 2026-06-08 12:05
VLAI
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
8.5 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
URL Tags
https://checkmk.com/werk/17991 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0p5 (semver)
Affected: 2.4.0 , < 2.4.0p31 (semver)
Affected: 2.3.0 , < 2.3.0p48 (semver)
Affected: 2.2.0 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2024-47091 (GCVE-0-2024-47091)

Vulnerability from cvelistv5 – Published: 2026-05-13 08:35 – Updated: 2026-05-13 12:01
VLAI
Title
Privilege escalation via mk_mysql agent plugin on Windows
Summary
Privilege escalation in the mk_mysql agent plugin on Windows in Checkmk <2.4.0p29, <2.3.0p47, and 2.2.0 (EOL) allows a local unprivileged user able to create a Windows service whose name matches 'MySQL' or 'MariaDB' (or with write access to a binary referenced by such a service) to execute arbitrary code in the context of the Checkmk agent service, which typically runs as SYSTEM.
Severity
5.2 (Medium)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-427 - Uncontrolled Search Path Element
Assigner
References
URL Tags
https://checkmk.com/werk/19198 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.4.0 , < 2.4.0p29 (semver)
Affected: 2.3.0 , < 2.3.0p47 (semver)
Affected: 2.2.0 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-33457 (GCVE-0-2026-33457)

Vulnerability from cvelistv5 – Published: 2026-04-10 08:31 – Updated: 2026-04-14 13:29
VLAI
Title
Potential livestatus injection in prediction graph page
Summary
Livestatus injection in the prediction graph page in Checkmk <2.5.0b4, <2.4.0p26, and <2.3.0p47 allows an authenticated user to inject arbitrary Livestatus commands via a crafted service name parameter due to insufficient sanitization of the service description value.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-140 - Improper Neutralization of Delimiters
Assigner
References
URL Tags
https://checkmk.com/werk/17990 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0b4 (semver)
Affected: 2.4.0 , < 2.4.0p26 (semver)
Affected: 2.3.0 , < 2.3.0p47 (semver)
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CVE-2026-33456 (GCVE-0-2026-33456)

Vulnerability from cvelistv5 – Published: 2026-04-10 08:31 – Updated: 2026-04-14 13:29
VLAI
Title
Potential livestatus injection in notification test
Summary
Livestatus injection in the notification test mode in Checkmk <2.5.0b4 and <2.4.0p26 allows an authenticated user with access to the notification test page to inject arbitrary Livestatus commands via a crafted service description.
Severity
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-140 - Improper Neutralization of Delimiters
Assigner
References
URL Tags
https://checkmk.com/werk/17989 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0b4 (semver)
Affected: 2.4.0 , < 2.4.0p26 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-33455 (GCVE-0-2026-33455)

Vulnerability from cvelistv5 – Published: 2026-04-10 08:30 – Updated: 2026-04-14 13:30
VLAI
Title
Livestatus injection in monitoring quicksearch
Summary
Livestatus injection in the monitoring quicksearch in Checkmk <2.5.0b4 allows an authenticated attacker to inject livestatus commands via the search query due to insufficient input sanitization in search filter plugins.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-140 - Improper Neutralization of Delimiters
Assigner
References
URL Tags
https://checkmk.com/werk/17988 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0 , < 2.5.0b4 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-39666 (GCVE-0-2025-39666)

Vulnerability from cvelistv5 – Published: 2026-04-07 12:09 – Updated: 2026-04-07 13:18
VLAI
Title
omd: Local privilege escalation when executing omd commands as root
Summary
Local privilege escalation in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0b3 allows a site user to escalate their privileges to root, by manipulating files in the site context that are processed when the `omd` administrative command is run by root.
Severity
9.3 (Critical)
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-426 - Untrusted Search Path
  • CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
Assigner
References
URL Tags
https://checkmk.com/werk/18891 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.2.0 (semver)
Affected: 2.3.0 , < 2.3.0p46 (semver)
Affected: 2.4.0 , < 2.4.0p25 (semver)
Affected: 2.5.0b1 , < 2.5.0b3 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-3466 (GCVE-0-2026-3466)

Vulnerability from cvelistv5 – Published: 2026-04-07 12:08 – Updated: 2026-04-22 12:26
VLAI
Title
Cross-site scripting in dashlet title
Summary
Insufficient sanitization of dashboard dashlet title links in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0 allows an attacker with dashboard creation privileges to perform stored cross-site scripting (XSS) attacks by tricking a victim into clicking a crafted dashlet title link on a shared dashboard.
Severity
8.5 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.2.0 (semver)
Affected: 2.3.0 , < 2.3.0p46 (semver)
Affected: 2.4.0 , < 2.4.0p25 (semver)
Affected: 2.5.0b1 , < 2.5.0 (semver)
Create a notification for this product.
Credits
Alex Williams (Pellera Technologies)
Show details on NVD website
To clipboard 

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CVE-2026-24096 (GCVE-0-2026-24096)

Vulnerability from cvelistv5 – Published: 2026-04-01 10:07 – Updated: 2026-04-01 12:37
VLAI
Title
Insufficient permission validation on multiple REST API Quick Setup endpoints
Summary
Insufficient permission validation on multiple REST API Quick Setup endpoints in Checkmk 2.5.0 (beta) before version 2.5.0b2 and 2.4.0 before version 2.4.0p25 allows low-privileged users to perform unauthorized actions or obtain sensitive information
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-280 - Improper Handling of Insufficient Permissions or Privileges
Assigner
References
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0b1 , < 2.5.0b2 (semver)
Affected: 2.4.0 , < 2.4.0p25 (semver)
Create a notification for this product.
Credits
PS Positive Security GmbH
Show details on NVD website
To clipboard 

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CVE-2026-20915 (GCVE-0-2026-20915)

Vulnerability from cvelistv5 – Published: 2026-03-31 13:51 – Updated: 2026-03-31 17:15
VLAI
Title
Stored cross-site scripting in Pending Changes sidebar
Summary
Stored cross-site scripting (XSS) in Checkmk version 2.5.0 (beta) before 2.5.0b2 allows authenticated users with permission to create pending changes to inject malicious JavaScript into the Pending Changes sidebar, which will execute in the browsers of other users viewing the sidebar.
Severity
8.5 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
URL Tags
https://checkmk.com/werk/19526 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0b1 , < 2.5.0b2 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-33276 (GCVE-0-2026-33276)

Vulnerability from cvelistv5 – Published: 2026-03-31 13:44 – Updated: 2026-03-31 15:45
VLAI
Title
XSS in Unified Search via Unescaped Host/Service Names
Summary
Stored cross-site scripting (XSS) in Checkmk 2.5.0 (beta) before 2.5.0b2 allows authenticated users with permission to create hosts or services to execute arbitrary JavaScript in the browsers of other users performing searches in the Unified Search feature.
Severity
8.6 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.5.0b1 , < 2.5.0b2 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-64998 (GCVE-0-2025-64998)

Vulnerability from cvelistv5 – Published: 2026-03-24 11:25 – Updated: 2026-03-25 03:55
VLAI
Title
Session hijacking via exposed session signing secret in distributed Checkmk setups
Summary
Exposure of session signing secret in Checkmk <2.4.0p23, <2.3.0p45 and 2.2.0 allows an administrator of a remote site with config sync enabled to hijack sessions on the central site by forging session cookies.
Severity
7.3 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-522 - Insufficiently Protected Credentials
Assigner
References
URL Tags
https://checkmk.com/werk/18954 vendor-advisory
Impacted products
Vendor Product Version
Checkmk GmbH Checkmk Affected: 2.4.0 , < 2.4.0p23 (semver)
Affected: 2.3.0 , < 2.3.0p45 (semver)
Affected: 2.2.0 (semver)
Create a notification for this product.
Credits
Lisa Gnedt (SBA Research)
Show details on NVD website
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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-64998",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-24T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-25T03:55:50.621Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Checkmk",
          "vendor": "Checkmk GmbH",
          "versions": [
            {
              "lessThan": "2.4.0p23",
              "status": "affected",
              "version": "2.4.0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.3.0p45",
              "status": "affected",
              "version": "2.3.0",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "2.2.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "2.4.0p23",
                  "versionStartIncluding": "2.4.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "2.3.0p45",
                  "versionStartIncluding": "2.3.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "2.2.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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          ]
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      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Lisa Gnedt (SBA Research)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Exposure of session signing secret in Checkmk \u003c2.4.0p23, \u003c2.3.0p45 and 2.2.0 allows an administrator of a remote site with config sync enabled to hijack sessions on the central site by forging session cookies."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-196",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-196: Session Credential Falsification through Forging"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-522",
              "description": "CWE-522: Insufficiently Protected Credentials",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-24T11:25:58.183Z",
        "orgId": "f7d6281c-4801-44ce-ace2-493291dedb0f",
        "shortName": "Checkmk"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://checkmk.com/werk/18954"
        }
      ],
      "title": "Session hijacking via exposed session signing secret in distributed Checkmk setups",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f7d6281c-4801-44ce-ace2-493291dedb0f",
    "assignerShortName": "Checkmk",
    "cveId": "CVE-2025-64998",
    "datePublished": "2026-03-24T11:25:58.183Z",
    "dateReserved": "2025-11-12T09:16:24.093Z",
    "dateUpdated": "2026-03-25T03:55:50.621Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}