Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| kyverno | kyverno | < 1.16.4, >= 1.17.0-rc1, < 1.17.2 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | kyverno-1.17 +6 | 1.17.2-r1 | — |
| Wolfi rolling | kyverno-notation-aws | 1.1-r52 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/kyverno/kyverno | >= 1.13.0, < 1.16.4 | 1.16.4 | GHSA-fpjq-c37h-cqcv |
| Go | github.com/kyverno/kyverno | >= 1.17.0-rc.1, < 1.17.2 | 1.17.2 | GHSA-fpjq-c37h-cqcv |
| Go | github.com/kyverno/kyverno | >= 1.13.0, < 1.16.4 · >= 1.17.0-rc.1, < 1.17.2 | 1.16.4, 1.17.2 | GO-2026-5374 |
Advisories 2
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026
- WID-SEC-2026-1152 Kyverno: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 23, 2026