What is CVE-2026-42541?

CVE-2026-42541 is a medium-severity vulnerability in Kubewarden Kubewarden-controller, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-05-12.

How severe is CVE-2026-42541?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Kubewarden Kubewarden-controller

CVE-2026-42541

Kubewarden is a policy engine for Kubernetes. Prior to , An attacker with privileged AdmissionPolicy or AdmissionPolicyGroup create permissions (which isn't the default) can craft a policy that makes use of the can_i host callback. The cal…

Vulnerability class: Broken Access Control

EPSS: 0.000 (6.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Kubewarden Kubewarden-controller — versions < 1.35.0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-42541?: CVE-2026-42541 is a medium-severity vulnerability in Kubewarden Kubewarden-controller, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-05-12.
How severe is CVE-2026-42541?: Medium severity. CVSS v3 base score is 4.3 out of 10.