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7.7
HIGH CVSS 3.1
CVE-2025-4439
GitLab Cross-Site Scripting (XSS)
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.

INFO

Published Date :

July 23, 2025, 6:15 p.m.

Last Modified :

Aug. 8, 2025, 6:27 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2025-4439 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Gitlab gitlab
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH [email protected]
CVSS 3.1 MEDIUM [email protected]
Solution
This information is provided by the 3rd party feeds.
  • Upgrade to GitLab version 18.0.5, 18.1.3, 18.2.1 or later.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-4439.

URL Resource
https://gitlab.com/gitlab-org/gitlab/-/issues/541177 Broken Link
https://hackerone.com/reports/3120111 Permissions Required
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-4439 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-4439 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-4439 vulnerability anywhere in the article.

  • CybersecurityNews
GitLab Security Update – Patch for Multiple Vulnerabilities in Community and Enterprise Edition

GitLab has released critical security patches addressing multiple vulnerabilities across its Community Edition (CE) and Enterprise Edition (EE) platforms, with versions 18.2.1, 18.1.3, and 18.0.5 now ... Read more

Published Date: Jul 24, 2025 (1 month ago)
  • Daily CyberSecurity
GitLab Update: High-Severity XSS & Data Exposure Flaws Patched

GitLab has released security updates for Community Edition (CE) and Enterprise Edition (EE), fixing multiple vulnerabilities—including high-severity cross-site scripting (XSS) issues and data exposure ... Read more

Published Date: Jul 23, 2025 (1 month ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-4439 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Aug. 08, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    Added CPE Configuration OR *cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* versions from (including) 18.1.0 up to (excluding) 18.1.3 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* versions from (including) 18.1.0 up to (excluding) 18.1.3 *cpe:2.3:a:gitlab:gitlab:18.2:*:*:*:community:*:*:* *cpe:2.3:a:gitlab:gitlab:18.2:*:*:*:enterprise:*:*:* *cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* versions from (including) 15.10.0 up to (excluding) 18.0.5 *cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* versions from (including) 15.10.0 up to (excluding) 18.0.5
    Added Reference Type GitLab Inc.: https://gitlab.com/gitlab-org/gitlab/-/issues/541177 Types: Broken Link
    Added Reference Type GitLab Inc.: https://hackerone.com/reports/3120111 Types: Permissions Required
  • New CVE Received by [email protected]

    Jul. 23, 2025

    Action Type Old Value New Value
    Added 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.
    Added CVSS V3.1 AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
    Added CWE CWE-79
    Added Reference https://gitlab.com/gitlab-org/gitlab/-/issues/541177
    Added Reference https://hackerone.com/reports/3120111
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 7.7
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact