CVE-2026-30836criticalCWE-287CWE-295

CVE-2026-30836: critical vulnerability in smallstep certificates

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

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28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 10epss 0.3%
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
Affected products
smallstep · certificates
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In the same product, most dangerous first.

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