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CVE-2026-41485

Kyverno Controller Denial of Service via forEach Mutation Panic

CVSS 3.1 7.7 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-41485

Published

Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to versions 1.17.2 and 1.16.4, an unchecked type assertion in the `forEach` mutation handler allows any user with permission to create a `Policy` or `ClusterPolicy` to crash the cluster-wide background controller into a persistent CrashLoopBackOff. The same bug also causes the admission controller to drop connections and block all matching resource operations. The crash loop persists until the policy is deleted. The vulnerability is confined to the legacy engine, and CEL-based policies are unaffected. Versions 1.17.2 and 1.16.4 fix the issue.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-41485

Published

kyverno

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "kyverno",
                    "product": "kyverno",
                    "versions": [
                        {
                            "version": "< 1.16.4",
                            "status": "affected"
                        },
                        {
                            "version": ">= 1.17.0-rc1, < 1.17.2",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON