CVE-2026-30836: step-ca has Unauthenticated Certificate Issuance via SCEP UpdateReq (MessageType=18)
(updated )
An attacker can force a Step CA SCEP provisioner to create certificates without completing certain protocol authorization checks.
References
- github.com/advisories/GHSA-q4r8-xm5f-56gw
- github.com/smallstep/certificates
- github.com/smallstep/certificates/commit/e6da031d5125cfd99fe9a26f74bb41e4dacca4ef
- github.com/smallstep/certificates/releases/tag/v0.30.0-rc7
- github.com/smallstep/certificates/security/advisories/GHSA-q4r8-xm5f-56gw
- nvd.nist.gov/vuln/detail/CVE-2026-30836
Code Behaviors & Features
Detect and mitigate CVE-2026-30836 with GitLab Dependency Scanning
Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →