CVE-2026-122313
CRITICAL
INFO
Priority: 0.03
BB Relevance:
69/100
Published: 2026-11-05
Modified: 2026-11-05
First seen: 2026-11-05
Status: active
Attack Surface
Network
Low Complexity
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
S:
X
AT:
None
VC:
High
VI:
High
VA:
High
Description
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.
Weakness Classification (1)
References & Advisories (2)
vendor-advisory
third-party-advisory