CVE-2025-46342: kyverno — Exploit & Fix

Description

Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to versions 1.13.5 and 1.14.0, it may happen that policy rules using namespace selector(s) in their match statements are mistakenly not applied during admission review request processing due to a missing error propagation in function `GetNamespaceSelectorsFromNamespaceLister` in `pkg/utils/engine/labels.go`. As a consequence, security-critical mutations and validations are bypassed, potentially allowing attackers with K8s API access to perform malicious operations. This issue has been patched in versions 1.13.5 and 1.14.0.

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CVSS v3.1 Score

8.5

HIGH

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

Weakness Type (CWE)

CWE-1287 CWE-1287

Affected Products

Vendor	Product	Versions
kyverno	kyverno	< 1.11.5
kyverno	kyverno	1.12.0 — 1.13.5

References

Advisories & Patches

https://github.com/kyverno/kyverno/commit/3ff923b7756e1681daf73849954bd88516589194 https://github.com/kyverno/kyverno/security/advisories/GHSA-jrr2-x33p-6hvc

Exploits

https://github.com/kyverno/kyverno/security/advisories/GHSA-jrr2-x33p-6hvc

Frequently Asked Questions

What is CVE-2025-46342? +

Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to versions 1.13.5 and 1.14.0, it may happen that policy rules using namespace selector(s) in their match statements are mistakenly not applied during admission review request processing due to a missing error propagation in function `GetNamespaceSelectorsFromNamespaceLister` in `pkg/utils/engine/labels.go`. As a consequence, security-critical mutations and validations are bypassed, potentially allowing attackers with K8s API access to perform malicious operations. This issue has been patched in versions 1.13.5 and 1.14.0. It has a CVSS v3.1 base score of 8.5 (HIGH).

How severe is CVE-2025-46342? +

CVE-2025-46342 has a CVSS v3.1 score of 8.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-46342? +

CVE-2025-46342 affects products from kyverno, specifically: kyverno. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-46342? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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