CVE-2023-3994

HIGH

Gitlab < 16.0.8 - Denial of Service

Title source: rule

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 9.3 before 16.0.8, all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. A Regular Expression Denial of Service was possible via sending crafted payloads which use ProjectReferenceFilter to the preview_markdown endpoint.

References (2)

[Broken Link] https://gitlab.com/gitlab-org/gitlab/-/issues/416225

[Permissions Required] https://hackerone.com/reports/1963255

Scores

CVSS v3 7.5

EPSS 0.0035

EPSS Percentile 57.6%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

CWE

CWE-1333

Status published

Products (4)

GitLab/GitLab 16.1 - 16.1.3

GitLab/GitLab 16.2 - 16.2.2

gitlab/gitlab 9.3 - 16.0.8 (2 CPE variants)

GitLab/GitLab 9.3 - 16.0.8

Published Aug 02, 2023

Tracked Since Feb 18, 2026