CVE-2026-122303
Kyverno from 1.17.0 before 1.19.2 contains an authorization bypass vulnerability that allows…
- Risk score
- 59/100
- CVSS
- 9.9 v3.1
- Published
- 5 Nov 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Kyverno from 1.17.0 before 1.19.2 contains an authorization bypass vulnerability that allows namespace tenants to overwrite resources in other namespaces via NamespacedMutatingPolicy mutate-existing targetMatchConstraints.expression. Attackers can return a CEL map literal fabricating a target with an attacker-chosen m…
- Affected
- See advisory
- Fix
- Upgrade the product to 1.19.2 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 9.9 critical
References
Original description
Kyverno from 1.17.0 before 1.19.2 contains an authorization bypass vulnerability that allows namespace tenants to overwrite resources in other namespaces via NamespacedMutatingPolicy mutate-existing targetMatchConstraints.expression. Attackers can return a CEL map literal fabricating a target with an attacker-chosen metadata.namespace, causing the privileged background controller to overwrite Secrets, Deployments, or policies cluster-wide.
Last activity 5 Nov 2026. Patch Forecast updates every hour.