CVE-2025-4439

HIGH

Gitlab < 18.0.5 - XSS

Title source: rule

Description

An issue has been discovered in GitLab CE/EE affecting all versions from 15.10 before 18.0.5, 18.1 before 18.1.3, and 18.2 before 18.2.1 that could have allowed an authenticated user to perform cross-site scripting attacks when the instance is served through certain content delivery networks.

References (2)

[Broken Link] https://gitlab.com/gitlab-org/gitlab/-/issues/541177

[Permissions Required] https://hackerone.com/reports/3120111

Scores

CVSS v3 7.7

EPSS 0.0004

EPSS Percentile 10.7%

Attack Vector NETWORK

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

Classification

CWE

CWE-79

Status published

Affected Products (4)

gitlab/gitlab < 18.0.5

gitlab/gitlab

Timeline

Published Jul 23, 2025

Tracked Since Feb 18, 2026