CVE-2026-15423

HIGH CVSS 3.1: 8.5 EPSS 0.26%
Updated Aug 19, 2026
GitLab
Parameter Value
CVSS 8.5 (HIGH)
Affected Versions 19.0.0 — 19.2.2
Fixed In 19.0.6
Type CWE-863 (Incorrect Authorization)
Vendor GitLab
Public PoC No

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.0 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to execute CI/CD pipelines on a protected branch without the required push permissions due to improper authorization in pipeline reference validation.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v3.1

Vulnerable Products 6

Configuration From (including) Up to (excluding)
Gitlab Gitlab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
19.0.0 19.0.6
Gitlab Gitlab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
19.0.0 19.0.6
Gitlab Gitlab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
19.1.0 19.1.4
Gitlab Gitlab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
19.1.0 19.1.4
Gitlab Gitlab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
19.2.0 19.2.2
Gitlab Gitlab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
19.2.0 19.2.2