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CVE-2025-4439

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CVE-2025-4439

Published: Jul 23, 2025

Modified: Feb 26, 2026

PUBLISHED

CVSS v3.1

7.7

HIGH

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.

VendorProductVersions

GitLab

GitLab

affected
15.10 - < 18.0.5
affected
18.1 - < 18.1.3
affected
18.2 - < 18.2.1

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

References

GitLab Issue #541177
issue-tracking
permissions-required
HackerOne Bug Bounty Report #3120111
technical-description
exploit
permissions-required

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