Dashboard / CVE-2025-4439

CVE-2025-4439

HIGH
MEDIUM Priority: 0.02 BB Relevance: 45/100
Published: 2025-07-23 Modified: 2026-11-03 First seen: 2026-11-03 Status: active

Attack Surface

Network Conf. Impact Integ. Impact Scope Change

CVSS Vector Breakdown

AV: Network
AC: High
PR: Low
UI: Required
S: Changed
C: High
I: High
A: None

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.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
GitLab GitLab 15.10 < 18.0.5
GitLab GitLab 18.1 < 18.1.3
GitLab GitLab 18.2 < 18.2.1

References & Advisories (2)

https://hackerone.com/reports/3120111
technical-description exploit permissions-required
https://gitlab.com/gitlab-org/gitlab/-/issues/541177
issue-tracking permissions-required

Bug Bounty Relevance

45 / 100
✓ Network accessible

CVSS Score

7.7 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N

EPSS — Exploitation Probability

0.28%
Raw Score 0.002800
Percentile 20.8%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00280
2026-11-13
0.00280
2026-11-12
0.00280
2026-11-10
0.00280
2026-11-09
0.00280
2026-11-08
0.00280
2026-11-07
0.00280
2026-11-06
0.00280
2026-11-05
0.00280
2026-11-04
0.00280
2026-11-03
0.00280

Intelligence Sources

mitre ref →

External Links