Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-30836

Severity CVSS v4.0:
Pending analysis
Type:
CWE-287 Authentication Issues
Publication date:
19/03/2026
Last modified:
27/04/2026

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 10.00 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x
10.00
Severity 3.x
CRITICAL

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:smallstep:step-ca:*:*:*:*:*:go:*:* 0.30.0 (excluding)
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:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools