CVE-2026-117611

Trust of compromised eMudhra root CA in bundled CA stores

State: Published
Severity: 7.1 High
Published: Oct 29, 2026
Updated: Oct 29, 2026
Reserved: Oct 27, 2026

Description

Improper certificate validation in Checkmk <2.5.0p18, <2.4.0p39, <2.3.0p52 and 2.2.0 (EOL): the Certificate Authority stores bundled with "certifi" and "webpki-roots" include a root CA that trusts eMudhra (emSign) intermediate certificates whose private keys are public.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H	Checkmk

Weaknesses

CWE-295 Improper Certificate Validation
CWE-1395 Dependency on Vulnerable Third-Party Component

Affected Products

Product	Versions
CheckmkCheckmk GmbH	2.5.0 to before 2.5.0p18Affected 2.4.0 to before 2.4.0p39Affected 2.3.0 to before 2.3.0p52Affected 2.2.0Affected

References

https://checkmk.com/werk/22623vendor-advisory
https://checkmk.com/werk/22169vendor-advisory
https://github.com/advisories/GHSA-6q48-6c7w-9gw2third-party-advisory

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