CVE-2026-30836

Step CA: Unauthenticated Certificate Issuance via SCEP UpdateReq (MessageType=18)

CVSS 10 CRITICALEPSS 0.3%CWE-287 CWE-295

Vexday Risk Score

28Bajo

Decisión SSVC (CISA)

Track

Sin señal de explotación → monitorear

CVSS 10EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

19 mar 2026Publicada en NVD

Recomendación: Monitorear — sin señal de explotación por ahora.

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Productos afectados

smallstep · certificates

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Referencias

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