CVE-2023-3979

Incorrect Authorization in GitLab

Published Sep 29, 2023 CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed
Description
An issue has been discovered in GitLab affecting all versions starting from 10.6 before 16.2.8, all versions starting from 16.3 before 16.3.5, all versions starting from 16.4 before 16.4.1. It was possible that upstream members to collaborate with you on your branch get permission to write to the merge request’s source branch.

Remediation

Vendor Solution

Upgrade to version 16.4.1, 16.3.5, 16.2.8

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-44603 An issue has been discovered in GitLab affecting all versions starting from 10.6 before 16.2.8, all versions starting from 16.3 before 16.3.5, all versions starting from 16.4 before 16.4.1. It was possible that upstream members to collaborate with you on your branch get permission to write to the merge request’s source branch.
History
Type Values Removed Values Added
Weaknesses CWE-200
Type Values Removed Values Added
Title Exposure of Sensitive Information to an Unauthorized Actor in GitLab Incorrect Authorization in GitLab
Weaknesses CWE-863
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
CPEs cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Weaknesses

Sources

Status
PUBLISHED
Assigner
GitLab
Published
Updated
Aug 14, 2026, 4:12 AM
Reserved
Jul 27, 2023, 6:01 PM
Status
Modified
Published
Sep 29, 2023, 7:15 AM
Modified
Jun 17, 2026, 6:15 AM