Vulnerability · Published Sep 1, 2026 · Assigned by VulnCheck

CVE-2026-84200Kyverno before v1.13.0 Policy Bypass via Multiple Exceptions

Critical 9.0

In plain English

A critical-severity improper access control in kyverno from kyverno. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.0Critical

Exploit odds (30 days)0.3%top 80.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/kyverno/kyverno	1.13.0	GHSA-gg4x-fgg2-h9w9
Go	github.com/kyverno/kyverno	1.13.0	GO-2026-4285

Affected products (as reported)

Vendor	Product	Versions
kyverno	kyverno	0 – before 1.13.0

Weakness: CWE-284 · Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

GitHub Security Advisory (GHSA-gg4x-fgg2-h9w9) vendor-advisory
VulnCheck Advisory: Kyverno before v1.13.0 Policy Bypass via Multiple Exceptions third-party-advisory