Kyverno before 1.19.2 contains a denial of service vulnerability that allows namespaced policy authors to exhaust admission controller CPU by submitting pathological wildcard patterns. Attackers can create a Policy with crafted match and exclude names evaluated by ValidateMatchExcludeConflict, pinning cores and causing cluster-wide webhook timeouts that block resource operations.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Thu, 05 Nov 2026 02:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Kyverno before 1.19.2 contains a denial of service vulnerability that allows namespaced policy authors to exhaust admission controller CPU by submitting pathological wildcard patterns. Attackers can create a Policy with crafted match and exclude names evaluated by ValidateMatchExcludeConflict, pinning cores and causing cluster-wide webhook timeouts that block resource operations. | |
| Title | Kyverno before 1.19.2 Denial of Service via Exponential-Time Wildcard Matching | |
| First Time appeared |
Kyverno
Kyverno kyverno |
|
| Weaknesses | CWE-407 | |
| CPEs | cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Kyverno
Kyverno kyverno |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-11-05T02:25:10.219Z
Reserved: 2026-11-04T23:23:51.290Z
Link: CVE-2026-122306
No data.
Status : Received
Published: 2026-11-05T03:17:22.680
Modified: 2026-11-05T03:17:22.680
Link: CVE-2026-122306
No data.
OpenCVE Enrichment
Updated: 2026-11-05T04:00:15Z
Weaknesses