What is GHSA-vh8f-cmpp-9cv2?

GHSA-vh8f-cmpp-9cv2 is a security advisory published by GitHub Security Advisories with High severity. Kyverno before 1.19.2 contains a denial of service vulnerability in substituteVariablesIfAny that...

Which CVE IDs does GHSA-vh8f-cmpp-9cv2 cover?

GHSA-vh8f-cmpp-9cv2 covers the following CVE IDs: CVE-2026-122305. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-vh8f-cmpp-9cv2?

GHSA-vh8f-cmpp-9cv2 has a CVSS v3 base score of 7.7, published by GitHub Security Advisories.

GHSA-vh8f-cmpp-9cv2HighCVSS 7.7

Kyverno before 1.19.2 contains a denial of service vulnerability in substituteVariablesIfAny that...

Vendor

GitHub Security Advisories

Published

November 5, 2026

Last Modified

November 5, 2026

🔗 CVE IDs covered (1)

CVE-2026-122305 →

📋 Description

Kyverno before 1.19.2 contains a denial of service vulnerability in substituteVariablesIfAny that allows low-privileged users to hang the admission webhook via self-referential variable templates. Attackers can create resources whose annotations re-introduce the embedded policy variable, causing unbounded substitution loops that exhaust CPU and memory and block cluster-wide admission.

🔗 References (4)

https://github.com/kyverno/kyverno/security/advisories/GHSA-338x-hgrv-626h
https://nvd.nist.gov/vuln/detail/CVE-2026-122305
https://www.vulncheck.com/advisories/kyverno-before-1.19.2-denial-of-service-via-nested-variable-substitution-loop
https://github.com/advisories/GHSA-vh8f-cmpp-9cv2