CVE-2026-6821

MEDIUM CVSS 3.1: 4.3 EPSS 0.28%
Updated Aug 19, 2026
GitLab
Parameter Value
CVSS 4.3 (MEDIUM)
Affected Versions 12.0.0 — 19.2.2
Fixed In 19.0.6
Type CWE-862 (Missing Authorization)
Vendor GitLab
Public PoC No

GitLab has remediated an issue in GitLab EE affecting all versions from 12.0 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 to bypass IP-based access restrictions and read limited merge request information from a private project due to missing authorization checks in a merge requests API endpoint.

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
None
No data modification
Availability
None
No disruption

CVSS Vector v3.1

Vulnerable Products 3

Configuration From (including) Up to (excluding)
Gitlab Gitlab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
12.0.0 19.0.6
Gitlab Gitlab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
19.1.0 19.1.4
Gitlab Gitlab
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
19.2.0 19.2.2