CVE-2023-3900

Improper Validation of Specified Type of Input in GitLab

Published Aug 2, 2023 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. An invalid 'start_sha' value on merge requests page may lead to Denial of Service as Changes tab would not load.

Remediation

Vendor Solution

Upgrade to version 16.2.2, 16.1.3 or above

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
EUVD EUVD EUVD-2023-44526 An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. An invalid 'start_sha' value on merge requests page may lead to Denial of Service as Changes tab would not load.
History
Type Values Removed Values Added
Weaknesses CWE-20
Type Values Removed Values Added
Title Improper Input Validation in GitLab Improper Validation of Specified Type of Input in GitLab
Weaknesses CWE-1287
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:*:*:*:*:*:*:*:*

Sources

Status
PUBLISHED
Assigner
GitLab
Published
Updated
Nov 20, 2025, 4:08 AM
Reserved
Jul 25, 2023, 10:30 AM
Status
Modified
Published
Aug 2, 2023, 1:15 AM
Modified
Jun 17, 2026, 6:15 AM
Severity
Moderate
Public date
Aug 2, 2023, 12:00 AM