CVE-2026-84200

critical

Kyverno versions v1.9.0 through v1.12.7 contain a policy exception handling flaw.

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

9.0

9.0 (CVSS v3.1)

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)

Timeline (UTC)

Published: 2026-09-01 12:17

Modified: 2026-09-10 15:43

NVD status: Awaiting Analysis

Last synced 1 day ago

Verified against the source API 2026-10-27 06:50 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

Not reported by the source (unknown — not "none").

Weakness classification (CWE)

CWE-284

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

https://github.com/kyverno/kyverno/security/advisories/GHSA-gg4x-fgg2-h9w9 disclosure@vulncheck.com
https://www.vulncheck.com/advisories/kyverno-before-1.13.0-policy-bypass-via-multiple-exce... disclosure@vulncheck.com
https://github.com/kyverno/kyverno/security/advisories/GHSA-gg4x-fgg2-h9w9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:50 UTC · record ↗

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