High severity8.1NVD Advisory· Published Apr 24, 2026· Updated Apr 27, 2026
CVE-2026-41323
CVE-2026-41323
Description
Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to versions 1.18.0-rc1, 1.17.2-rc1, and 1.16.4, Kyverno's apiCall feature in ClusterPolicy automatically attaches the admission controller's ServiceAccount token to outgoing HTTP requests. The service URL has no validation — it can point anywhere, including attacker-controlled servers. Since the admission controller SA has permissions to patch webhook configurations, a stolen token leads to full cluster compromise. Versions 1.18.0-rc1, 1.17.2-rc1, and 1.16.4 patch the issue.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/kyverno/kyvernoGo | < 1.17.0 | 1.17.0 |
Affected products
40- osv-coords38 versionspkg:apk/chainguard/kyverno-1.16pkg:apk/chainguard/kyverno-1.17pkg:apk/chainguard/kyverno-background-controller-1.16pkg:apk/chainguard/kyverno-background-controller-1.17pkg:apk/chainguard/kyverno-background-controller-fips-1.17pkg:apk/chainguard/kyverno-cleanup-controller-1.16pkg:apk/chainguard/kyverno-cleanup-controller-1.17pkg:apk/chainguard/kyverno-cleanup-controller-fips-1.17pkg:apk/chainguard/kyverno-cli-1.16pkg:apk/chainguard/kyverno-cli-1.17pkg:apk/chainguard/kyverno-cli-fips-1.17pkg:apk/chainguard/kyverno-fips-1.17pkg:apk/chainguard/kyverno-init-container-1.16pkg:apk/chainguard/kyverno-init-container-1.17pkg:apk/chainguard/kyverno-init-container-fips-1.17pkg:apk/chainguard/kyverno-notation-awspkg:apk/chainguard/kyverno-notation-aws-fipspkg:apk/chainguard/kyverno-readiness-checker-1.17pkg:apk/chainguard/kyverno-readiness-checker-fips-1.17pkg:apk/chainguard/kyverno-reports-controller-1.16pkg:apk/chainguard/kyverno-reports-controller-1.17pkg:apk/chainguard/kyverno-reports-controller-fips-1.17pkg:apk/wolfi/kyverno-1.16pkg:apk/wolfi/kyverno-1.17pkg:apk/wolfi/kyverno-background-controller-1.16pkg:apk/wolfi/kyverno-background-controller-1.17pkg:apk/wolfi/kyverno-cleanup-controller-1.16pkg:apk/wolfi/kyverno-cleanup-controller-1.17pkg:apk/wolfi/kyverno-cli-1.16pkg:apk/wolfi/kyverno-cli-1.17pkg:apk/wolfi/kyverno-init-container-1.16pkg:apk/wolfi/kyverno-init-container-1.17pkg:apk/wolfi/kyverno-notation-awspkg:apk/wolfi/kyverno-readiness-checker-1.17pkg:apk/wolfi/kyverno-reports-controller-1.16pkg:apk/wolfi/kyverno-reports-controller-1.17pkg:bitnami/kyvernopkg:golang/github.com/kyverno/kyverno
< 1.16.4-r1+ 37 more
- (no CPE)range: < 1.16.4-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.16.4-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.16.4-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.16.4-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.16.4-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.1-r49
- (no CPE)range: < 1.1-r46
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.16.4-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.16.4-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.16.4-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.16.4-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.16.4-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.16.4-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.1-r49
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.16.4-r1
- (no CPE)range: < 1.17.2-r1
- (no CPE)range: < 1.16.4
- (no CPE)range: < 1.17.0
Patches
Vulnerability mechanics
References
6- github.com/kyverno/kyverno/commit/bc4f91c4801b1eaa2edc0a14e2f1b0af8cf0c1f5nvdPatchWEB
- github.com/kyverno/kyverno/commit/c2eab00033e635bda4e4efb58c1b472b41728bb6nvdPatchWEB
- github.com/kyverno/kyverno/commit/f70e8ac1e7acd2e3844f9553e4a884f07f953de0nvdPatchWEB
- github.com/advisories/GHSA-f9g8-6ppc-pqq4ghsaADVISORY
- github.com/kyverno/kyverno/security/advisories/GHSA-f9g8-6ppc-pqq4nvdVendor AdvisoryExploitWEB
- nvd.nist.gov/vuln/detail/CVE-2026-41323ghsaADVISORY
News mentions
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