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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (18.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/kyverno/kyverno/security/advisories/GHSA-gg4x-fgg2-h9w9 (vendor-advisory)
- www.vulncheck.com/advisories/kyverno-before-1.13.0-policy-bypass-via-multiple-e… (third-party-advisory)
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.