What is CVE-2026-122319?

CVE-2026-122319 is a high-severity vulnerability in Kyverno, classified under Incorrect Type Conversion or Cast. CVSS score: 7.5/10. Published 2026-11-05.

How severe is CVE-2026-122319?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Kyverno

CVE-2026-122319

Kyverno before 1.19.2 contains a denial-of-service vulnerability in the In and NotIn operators that allows attackers to crash the policy engine via an unchecked type assertion. Attackers can submit resources whose JMESPath-evaluated values yield arrays of integers, booleans, or mixed types, triggering a panic that disrupts admission control and policy enforcement.

Published 2026-11-05 · last modified 2026-11-05.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Kyverno

Weakness classification (CWE)

CWE-704 — Incorrect Type Conversion or Cast

References

github.com/kyverno/kyverno/security/advisories/GHSA-r2p2-3892-5jjf (vendor-advisory)
www.vulncheck.com/advisories/kyverno-before-1.19.2-denial-of-service-via-in-not… (third-party-advisory)

Frequently asked questions

What is CVE-2026-122319?: CVE-2026-122319 is a high-severity vulnerability in Kyverno, classified under Incorrect Type Conversion or Cast. CVSS score: 7.5/10. Published 2026-11-05.
How severe is CVE-2026-122319?: High severity. CVSS v3 base score is 7.5 out of 10.