Bug 2567489 (CVE-2026-122305)
| Summary: | CVE-2026-122305 github.com/kyverno/kyverno: Kyverno: Denial of Service via unbounded variable substitution loop | ||
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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: | high | Docs Contact: | |
| Priority: | high | ||
| 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. An authenticated user with low privileges can trigger a Denial of Service (DoS) by submitting resources containing self-referential variable templates within annotations. When processing these annotations, Kyverno enters an unbounded substitution loop that exhausts system memory and processor resources. This condition causes the admission webhook to become unresponsive, blocking admission requests across the entire 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 22:02:03 UTC
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