Description
Path traversal in the Synthetic Monitoring "Robotmk" test service of Checkmk <2.5.0p19, <2.4.0p40, and 2.3.0 (EOL) allows an attacker who controls the agent output of a monitored host's check output for a host to inject a crafted robot output to define the contents and location for the generated HTML log, leading to code execution as the site user.
Published: 2026-11-11
Score: 9.4 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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References
Link Providers
https://checkmk.com/werk/22624 cve-icon cve-icon
History

Wed, 11 Nov 2026 11:00:00 +0000

Type Values Removed Values Added
Description Path traversal in the Synthetic Monitoring "Robotmk" test service of Checkmk <2.5.0p19, <2.4.0p40, and 2.3.0 (EOL) allows an attacker who controls the agent output of a monitored host's check output for a host to inject a crafted robot output to define the contents and location for the generated HTML log, leading to code execution as the site user.
Title Arbitrary file write and code execution via crafted Synthetic Monitoring agent data
First Time appeared Checkmk
Checkmk checkmk
Weaknesses CWE-23
CPEs cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*
cpe:2.3:a:checkmk:checkmk:2.3.0:*:*:*:*:*:*:*
Vendors & Products Checkmk
Checkmk checkmk
References
Metrics cvssV4_0

{'score': 9.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}

Subscriptions

Checkmk Checkmk
cve-icon MITRE

Status: PUBLISHED

Assigner: Checkmk

Published:

Updated: 2026-11-11T10:46:33.920Z

Reserved: 2026-11-02T14:44:35.153Z

Link: CVE-2026-120495

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-11-11T11:17:13.433

Modified: 2026-11-11T11:17:13.547

Link: CVE-2026-120495

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-23

    Relative Path Traversal