Search criteria
150 vulnerabilities found for Checkmk by Checkmk GmbH
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
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-427 - Uncontrolled Search Path Element
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19198 | vendor-advisory |
Impacted products
1 product
| 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) |
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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
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-140 - Improper Neutralization of Delimiters
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/17990 | vendor-advisory |
Impacted products
1 product
| 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 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
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-140 - Improper Neutralization of Delimiters
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/17989 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0b4
(semver)
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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
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-140 - Improper Neutralization of Delimiters
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/17988 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0b4
(semver)
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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
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
3 references
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19033 | vendor-advisory |
| https://checkmk.com/werk/19583 | vendor-advisory |
| https://www.vulncheck.com/advisories/checkmk-stor… | third-party-advisory |
Impacted products
1 product
| 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) |
Credits
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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
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/18891 | vendor-advisory |
Impacted products
1 product
| 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) |
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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
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
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/18989 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0b1 , < 2.5.0b2
(semver)
Affected: 2.4.0 , < 2.4.0p25 (semver) |
Credits
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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
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
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19525 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
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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
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
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19526 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
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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
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-522 - Insufficiently Protected Credentials
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/18954 | vendor-advisory |
Impacted products
1 product
| 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) |
Credits
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CVE-2026-2859 (GCVE-0-2026-2859)
Vulnerability from nvd – Published: 2026-03-13 09:40 – Updated: 2026-03-13 15:48
VLAI
Title
Unauthenticated Host Enumeration via Observable Response Discrepancy on Deploy Agent Endpoint
Summary
Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 (EOL) allows unauthenticated users to enumerate existing hosts by observing different HTTP response codes in deploy_agent endpoint, which could lead to information disclosure.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/18994 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.4.0 , < 2.4.0p23
(semver)
Affected: 2.3.0 , < 2.3.0p43 (semver) Affected: 2.2.0 (semver) |
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CVE-2026-24097 (GCVE-0-2026-24097)
Vulnerability from nvd – Published: 2026-03-13 09:40 – Updated: 2026-03-13 15:56
VLAI
Title
Authenticated Host Enumeration via Observable Response Discrepancy on Agent Register Existing Endpoint
Summary
Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 (EOL) allows authenticated users to enumerate existing hosts by observing different HTTP response codes in agent-receiver/register_existing endpoint, which could lead to information disclosure.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/18993 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.4.0 , < 2.4.0p23
(semver)
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CVE-2026-3103 (GCVE-0-2026-3103)
Vulnerability from nvd – Published: 2026-03-04 13:15 – Updated: 2026-03-04 14:07
VLAI
Title
Deletion of passwords via RestApi
Summary
A logic error in the remove_password() function in Checkmk GmbH's Checkmk versions <2.4.0p23, <2.3.0p43, and 2.2.0 (EOL) allows a low-privileged user to cause data loss.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19041 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.4.0 , < 2.4.0p23
(semver)
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CVE-2025-64999 (GCVE-0-2025-64999)
Vulnerability from nvd – Published: 2026-02-26 10:26 – Updated: 2026-04-14 14:28
VLAI
Title
Cross-site scripting in HTML logs of Synthetic Monitoring test services
Summary
Improper neutralization of input in Checkmk versions 2.4.0 before 2.4.0p22, and 2.3.0 before 2.3.0p43 allows an attacker that can manipulate a host's check output to inject malicious JavaScript into the Synthetic Monitoring HTML logs, which can then be accessed via a crafted phishing link.
Severity
SSVC
Exploitation: poc
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
2 references
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19238 | vendor-advisory |
| https://github.com/sbaresearch/advisories/tree/e7… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.4.0 , < 2.4.0p22
(semver)
Affected: 2.3.0 , < 2.3.0p43 (semver) |
Credits
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CVE-2026-24095 (GCVE-0-2026-24095)
Vulnerability from nvd – Published: 2026-02-09 15:29 – Updated: 2026-02-09 15:54
VLAI
Title
Missing Permission Check on Analyze Configuration Page
Summary
Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p21, 2.3.0 before 2.3.0p43, and 2.2.0 (EOL) allows users with the "Use WATO" permission to access the "Analyze configuration" page by directly navigating to its URL, bypassing the intended "Access analyze configuration" permission check. If these users also have the "Make changes, perform actions" permission, they can perform unauthorized actions such as disabling checks or acknowledging results.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19032 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.4.0 , < 2.4.0p21
(semver)
Affected: 2.3.0 , < 2.3.0p43 (semver) Affected: 2.2.0 (semver) |
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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
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-427 - Uncontrolled Search Path Element
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19198 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.4.0 , < 2.4.0p29
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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
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-140 - Improper Neutralization of Delimiters
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/17990 | vendor-advisory |
Impacted products
1 product
| 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
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-140 - Improper Neutralization of Delimiters
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/17989 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0b4
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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
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-140 - Improper Neutralization of Delimiters
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/17988 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0 , < 2.5.0b4
(semver)
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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
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/18891 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.2.0
(semver)
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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
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
3 references
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19033 | vendor-advisory |
| https://checkmk.com/werk/19583 | vendor-advisory |
| https://www.vulncheck.com/advisories/checkmk-stor… | third-party-advisory |
Impacted products
1 product
| 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) |
Credits
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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
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
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/18989 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0b1 , < 2.5.0b2
(semver)
Affected: 2.4.0 , < 2.4.0p25 (semver) |
Credits
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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
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
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19526 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0b1 , < 2.5.0b2
(semver)
|
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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
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
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19525 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.5.0b1 , < 2.5.0b2
(semver)
|
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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
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-522 - Insufficiently Protected Credentials
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/18954 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.4.0 , < 2.4.0p23
(semver)
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Credits
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CVE-2026-2859 (GCVE-0-2026-2859)
Vulnerability from cvelistv5 – Published: 2026-03-13 09:40 – Updated: 2026-03-13 15:48
VLAI
Title
Unauthenticated Host Enumeration via Observable Response Discrepancy on Deploy Agent Endpoint
Summary
Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 (EOL) allows unauthenticated users to enumerate existing hosts by observing different HTTP response codes in deploy_agent endpoint, which could lead to information disclosure.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/18994 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.4.0 , < 2.4.0p23
(semver)
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CVE-2026-24097 (GCVE-0-2026-24097)
Vulnerability from cvelistv5 – Published: 2026-03-13 09:40 – Updated: 2026-03-13 15:56
VLAI
Title
Authenticated Host Enumeration via Observable Response Discrepancy on Agent Register Existing Endpoint
Summary
Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 (EOL) allows authenticated users to enumerate existing hosts by observing different HTTP response codes in agent-receiver/register_existing endpoint, which could lead to information disclosure.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/18993 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.4.0 , < 2.4.0p23
(semver)
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CVE-2026-3103 (GCVE-0-2026-3103)
Vulnerability from cvelistv5 – Published: 2026-03-04 13:15 – Updated: 2026-03-04 14:07
VLAI
Title
Deletion of passwords via RestApi
Summary
A logic error in the remove_password() function in Checkmk GmbH's Checkmk versions <2.4.0p23, <2.3.0p43, and 2.2.0 (EOL) allows a low-privileged user to cause data loss.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19041 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.4.0 , < 2.4.0p23
(semver)
Affected: 2.3.0 , < 2.3.0p43 (semver) Affected: 2.2.0 (semver) |
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CVE-2025-64999 (GCVE-0-2025-64999)
Vulnerability from cvelistv5 – Published: 2026-02-26 10:26 – Updated: 2026-04-14 14:28
VLAI
Title
Cross-site scripting in HTML logs of Synthetic Monitoring test services
Summary
Improper neutralization of input in Checkmk versions 2.4.0 before 2.4.0p22, and 2.3.0 before 2.3.0p43 allows an attacker that can manipulate a host's check output to inject malicious JavaScript into the Synthetic Monitoring HTML logs, which can then be accessed via a crafted phishing link.
Severity
SSVC
Exploitation: poc
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
2 references
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19238 | vendor-advisory |
| https://github.com/sbaresearch/advisories/tree/e7… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.4.0 , < 2.4.0p22
(semver)
Affected: 2.3.0 , < 2.3.0p43 (semver) |
Credits
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CVE-2026-24095 (GCVE-0-2026-24095)
Vulnerability from cvelistv5 – Published: 2026-02-09 15:29 – Updated: 2026-02-09 15:54
VLAI
Title
Missing Permission Check on Analyze Configuration Page
Summary
Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p21, 2.3.0 before 2.3.0p43, and 2.2.0 (EOL) allows users with the "Use WATO" permission to access the "Analyze configuration" page by directly navigating to its URL, bypassing the intended "Access analyze configuration" permission check. If these users also have the "Make changes, perform actions" permission, they can perform unauthorized actions such as disabling checks or acknowledging results.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://checkmk.com/werk/19032 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Checkmk GmbH | Checkmk |
Affected:
2.4.0 , < 2.4.0p21
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