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CVE-2026-30836 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:10 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/smallstep/certificates/commit/e6da031d5125cfd99fe9a26f74bb41e4dacca4ef	[email protected]	Patch
https://github.com/smallstep/certificates/releases/tag/v0.30.0-rc7	[email protected]	Release Notes
https://github.com/smallstep/certificates/security/advisories/GHSA-q4r8-xm5f-56gw	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-295	Improper Certificate Validation	[email protected]
CWE-287	Improper Authentication	[email protected]
CWE-295	Improper Certificate Validation	[email protected]

Affected Products

Product	Versions
smallstep step-ca	< 0.30.0 0.30.0 rc1 0.30.0 rc2 0.30.0 rc3 0.30.0 rc4
CPE cpe:2.3:a:smallstep:step-ca::::::go::* cpe:2.3:a:smallstep:step-ca:0.30.0:rc1::::go::* cpe:2.3:a:smallstep:step-ca:0.30.0:rc2::::go::* cpe:2.3:a:smallstep:step-ca:0.30.0:rc3::::go::* cpe:2.3:a:smallstep:step-ca:0.30.0:rc4::::go::* cpe:2.3:a:smallstep:step-ca:0.30.0:rc5::::go::* cpe:2.3:a:smallstep:step-ca:0.30.0:rc6::::go::* Remediation No remediation found in references.

Product

Versions

smallstep step-ca

< 0.30.0

0.30.0 rc1

0.30.0 rc2

0.30.0 rc3

0.30.0 rc4

CPE

cpe:2.3:a:smallstep:step-ca:*:*:*:*:*:go:*:*
cpe:2.3:a:smallstep:step-ca:0.30.0:rc1:*:*:*:go:*:*
cpe:2.3:a:smallstep:step-ca:0.30.0:rc2:*:*:*:go:*:*
cpe:2.3:a:smallstep:step-ca:0.30.0:rc3:*:*:*:go:*:*
cpe:2.3:a:smallstep:step-ca:0.30.0:rc4:*:*:*:go:*:*
cpe:2.3:a:smallstep:step-ca:0.30.0:rc5:*:*:*:go:*:*
cpe:2.3:a:smallstep:step-ca:0.30.0:rc6:*:*:*:go:*:*

Remediation

No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Apr 27, 2026	Initial Analysis	[email protected]
Mar 19, 2026	New CVE Received	[email protected]