Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-122313

Kyverno from 1.17.0 before 1.19.2 contains a privilege escalation vulnerability that allows namespace-scoped tenants to modify resources in other namespaces through NamespacedMutatingPolicy targetMatchConstraints.expression CEL output lacking namespace checks. Attackers can emit a literal target such as another tenant's RoleBinding, which the cluster-wide background controller then mutates to add attacker subjects or alter Roles, NetworkPolicies, and ConfigMaps.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 24.2%
CVSS Severity
CVSS v3 Score 9.9
Products affected by CVE-2026-122313


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