2567748 – (CVE-2026-122309) CVE-2026-122309 github.com/kyverno/kyverno: Kyverno: Denial of Service via unbounded CEL policy evaluation

Bug 2567748 (CVE-2026-122309) - CVE-2026-122309 github.com/kyverno/kyverno: Kyverno: Denial of Service via unbounded CEL policy evaluation

Summary: CVE-2026-122309 github.com/kyverno/kyverno: Kyverno: Denial of Service via un...

Keywords:
Status:	NEW
Alias:	CVE-2026-122309
Product:	Security Response
Classification:	Other
Component:	vulnerability
Sub Component:
Version:	unspecified
Hardware:	All
OS:	Linux
Priority:	medium
Severity:	medium
Target Milestone:	---
Assignee:	Product Security DevOps Team
QA Contact:
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2026-11-05 22:23 UTC by OSIDB Bzimport
Modified:	2026-11-06 01:04 UTC (History)
CC List:	3 users (show)
Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments	(Terms of Use)

Description OSIDB Bzimport 2026-11-05 22:23:02 UTC

Kyverno before 1.19.2 contains a denial of service vulnerability that allows namespace-scoped policy authors to exhaust CPU and memory by submitting CEL expressions evaluated without runtime cost limits. Attackers can create a NamespacedValidatingPolicy or NamespacedDeletingPolicy with nested map comprehensions over large ConfigMap fields to OOM-kill Kyverno pods and block cluster-wide admission.

Note You need to log in before you can comment on or make changes to this bug.