by Kastro
Paper/Archive/CVE-2026-122302

CVE-2026-122302

kyverno kyverno — Kyverno before 1.19.2 Privilege Escalation via Generate Rule Permission Check

CVSS 9.8
critical.is priorityof 100
29
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0No EPSS score.000 × 200.0No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
kyverno< 1.19.21.19.2CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

advisorygithub.com/kyverno/kyverno/security/advisories/GHSA-q62c-r9v2-cf64writeupvulncheck.com/advisories/kyverno-before-1.19.2-privilege-escalation-via-generate-rule-permission-check