Vulnerability in Kyverno

CVE-2026-84200

Kyverno versions v1.9.0 through v1.12.7 contain a policy exception handling flaw. When a policy in enforce mode is combined with two PolicyExceptions, the less restrictive exception takes precedence, allowing an attacker to bypass the policy by crafting a resource name that matches the second exception's name pattern (e.g., '*ingress*'). This can be used to circumvent policies such as one blocking hostPath volumes. Fixed in v1.13.0.

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-84200?
CVE-2026-84200 is a critical-severity vulnerability in Kyverno, classified under Improper Access Control. CVSS score: 9.0/10. Published 2026-09-01.
How severe is CVE-2026-84200?
Critical severity. CVSS v3 base score is 9.0 out of 10.