CVE-2026-122303Critical· 9.9▾ MidnightKyverno 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. Att…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 54.5 · likelihood 0 · exploitation 0
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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.
kyverno >= 1.17.0 < 1.19.2Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-122316High· 8.5Kyverno 1.17.0 before 1.19.2 Cross-Namespace Write via NamespacedMutatingPolicy mutateExisting
CVE-2026-122320High· 7.7Kyverno before 1.19.2 Cross-Namespace Resource Read via generate.clone
CVE-2026-122323High· 7.5Kyverno 1.11.0 before 1.19.2 Memory Exhaustion via Notary Signature Decompression
CVE-2026-122319High· 7.5Kyverno before 1.19.2 Denial of Service via In/NotIn Operator Panic
CVE-2026-122321Critical· 9.1Kyverno 1.18.0 before 1.19.2 verifyImages Cache Signature Verification Bypass
CVE-2026-122318High· 7.7Kyverno before 1.19.2 Cosign Identity Check Bypass via Empty SAN Certificates