CVE-2026-30836
CRITICALStep CA: Unauthenticated Certificate Issuance via SCEP UpdateReq (MessageType=18)
Title source: cnaDescription
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.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/smallstep/certificates/security/advisories/GHSA-q4r8-xm5f-56gw
X_Refsource_Misc x_refsource_misc
https://github.com/smallstep/certificates/commit/e6da031d5125cfd99fe9a26f74bb41e4dacca4ef
X_Refsource_Misc x_refsource_misc
https://github.com/smallstep/certificates/releases/tag/v0.30.0-rc7
Scores
CVSS v3
10.0
EPSS
0.0030
EPSS Percentile
21.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-287
CWE-295
Status
published
Products (4)
smallstep/certificates
0 - 0.30.0Go
smallstep/certificates
< 0.30.0
smallstep/step-ca
0.30.0 rc1 (6 CPE variants)
smallstep/step-ca
< 0.30.0
Published
Mar 19, 2026
Tracked Since
Mar 20, 2026