CVE-2026-122302 PUBLISHED

Kyverno before 1.19.2 Privilege Escalation via Generate Rule Permission Check

Assigner: VulnCheck
Reserved: 04.11.2026 Published: 05.11.2026 Updated: 05.11.2026

Kyverno before 1.19.2 contains a privilege escalation vulnerability that allows namespace admins to create resources beyond their RBAC because generate-rule admission checks verify the controller's permissions, not the author's. Attackers can create a namespaced Policy with generate rules targeting other namespaces or cluster-scoped kinds, making the background controller create or clone resources cluster-wide.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 9.3

Product Status

Vendor kyverno
Product kyverno
Versions Default: unaffected
  • affected from 0 to 1.19.2 (excl.)
  • Version 1.19.2 is unaffected

Credits

  • Trenyx finder

References

Problem Types

  • Improper Privilege Management CWE