CVE-2026-41323
CRITICAL WAF: Medium
CVSS 9.1
Published: 2026-04-24
CWE-918
Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to versions 1.18.0-rc1, 1.17.2-rc1, and 1.16.4, Kyverno's apiCall feature in ClusterPolicy automatically attaches the admission controller's ServiceAccount token to outgoing HTTP requests. The service URL has no validation — it can point anywhere, including attacker-controlled servers. Since the admission controller SA has permissions to patch webhook configurations, a stolen token leads to full cluster compromise. Versions 1.18.0-rc1, 1.17.2-rc1, and 1.16.4 patch the issue.
WAF Coverage Analysis
Server-Side Request Forgery (SSRF)
Medium WAF Coverage
OWASP: A10:2021 SSRF
934xxx - Node.js / Generic Injection
Affected Software
| Vendor | Product | Version |
|---|---|---|
| kyverno | kyverno | up to 1.16.4 |
| kyverno | kyverno | 1.17.0 - 1.17.2 |
References
- github.com (Patch)
- github.com (Patch)
- github.com (Patch)
- github.com (Vendor Advisory, Exploit)