CVE-2026-118965 PUBLISHED

Path traversal in host label synchronization allows code execution on the central site from a remote site

Assigner: Checkmk
Reserved: 29.10.2026 Published: 11.11.2026 Updated: 11.11.2026

Path traversal in the discovered host label synchronization in Checkmk <2.5.0p19, <2.4.0p40 and 2.3.0 (EOL) allows an attacker in control of a remote site in a distributed monitoring setup to write arbitrary files on the central site and thereby execute code as the central site user.

Metrics

CVSS 4.0

CVSS 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
CVSS Score: 9.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	None	Availability	High	Availability	High
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	Checkmk GmbH
Product	Checkmk
Versions	Default: unaffected affected from 2.5.0 to 2.5.0p19 (excl.) affected from 2.4.0 to 2.4.0p40 (excl.) Version 2.3.0 is affected

References

https://checkmk.com/werk/22120

Problem Types

CWE-22: Improper Limitation of a Pathname to a Restricted Directory CWE

Impacts

CAPEC-126: Path Traversal