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Advisory record · GHSA-jrr2-x33p-6hvc

Kyverno vulnerable to bypass of policy rules that use namespace selectors in match statements

CVSS 8.6 HighEPSS 0.0077 · 55th percentile

Published by the GitHub Advisory Database at 29 Apr 2025, 16:39 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/kyverno/kyvernoGo<1.13.5 || >=1.14.0-alpha.1, <1.14.01.13.5, 1.14.0
Identifiers
GHSA-jrr2-x33p-6hvc · BIT-kyverno-2025-46342 · CVE-2025-46342 · GO-2025-3652
Weakness (CWE)
CWE-1287
Tags
Published
29 Apr 2025
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Kyverno, a Go package github.com/kyverno/kyverno, versions before 1.13.5 and from 1.14.0-alpha.1 before 1.14.0, can skip policy rules that use namespace selectors in their match statements. When the namespace lookup fails, the error is dropped and the namespace is treated as having no labels, so rules are not applied during admission. An attacker with Kubernetes API access could then get security-relevant mutations and validations bypassed; the source gives no reliable way to reproduce the condition. Upgrade to 1.13.5 or 1.14.0.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.6 High 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0077, the 55th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:14 UTC First seen by agentprime
  2. 31 Oct 2026, 14:14 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.