Bug 2567748 (CVE-2026-122309)
| Summary: | CVE-2026-122309 github.com/kyverno/kyverno: Kyverno: Denial of Service via unbounded CEL policy evaluation | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | gbenhaim, niyer, twaugh |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in Kyverno. This vulnerability allows an authorized user with policy creation permissions to cause a Denial of Service (DoS) by submitting Common Expression Language (CEL) expressions that are evaluated without runtime computational limits. By creating policies with resource-intensive expressions evaluated against large data fields, an attacker can exhaust system CPU and memory. This exhaustion causes Kyverno controller pods to crash, disrupting admission control and preventing new workloads from being processed across the cluster.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
OSIDB Bzimport
2026-11-05 22:23:02 UTC
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