VulnerabilityAnalyzed

CVE-2026-30836

Step CA is an online certificate authority for secure, automated certificate management for DevOps.

CRITICAL 10.0EPSS 0.30%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.30%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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: 10.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
EPSS: 0.30% probability · 22th percentile
CISA KEV: Not listed
Weakness: CWE-287, CWE-295
Affected: smallstep/step-ca
Source: security-advisories@github.com

References

https://github.com/smallstep/certificates/commit/e6da031d5125cfd99fe9a26f74bb41e4dacca4efPatch
https://github.com/smallstep/certificates/releases/tag/v0.30.0-rc7Release Notes
https://github.com/smallstep/certificates/security/advisories/GHSA-q4r8-xm5f-56gwVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.