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CVE-2023-3909

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CVE-2023-3909

Published: Nov 6, 2023

Modified: Nov 20, 2025

PUBLISHED

CVSS v3.1

4.3

MEDIUM

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.3 before 16.3.6, all versions starting from 16.4 before 16.4.2, all versions starting from 16.5 before 16.5.1. A Regular Expression Denial of Service was possible by adding a large string in timeout input in gitlab-ci.yml file.

VendorProductVersions

GitLab

GitLab

affected
12.3 - < 16.3.6
affected
16.4 - < 16.4.2
affected
16.5 - < 16.5.1

Weaknesses (CWE)

CWE-1333

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

References

GitLab Issue #418763
issue-tracking
permissions-required
HackerOne Bug Bounty Report #2050269
technical-description
exploit
permissions-required

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