CRITICAL: CVE-2026-30836 (CVSS 10) — smallstep step-ca

CVE: CVE-2026-30836

CVSS: 10 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Severity: CRITICAL

Status: Critical advisory

Affected

smallstep step-ca

Summary

Step CA is an online certificate authority for secure, automated certificate management for DevOps. Versions 0.30.0-rc6 and below do not safeguard against unauthenticated certificate issuance through the SCEP UpdateReq. This issue has been fixed in version 0.30.0.

Verified Sources

References

https://github.com/smallstep/certificates/commit/e6da031d5125cfd99fe9a26f74bb41e4dacca4ef
https://github.com/smallstep/certificates/releases/tag/v0.30.0-rc7
https://github.com/smallstep/certificates/security/advisories/GHSA-q4r8-xm5f-56gw

_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._

Lyrie Verdict

A vulnerability of this severity is exactly what Lyrie's anti-rogue-AI defense is built for: continuous, autonomous monitoring that doesn't wait for human reaction time.

#smallstep #critical