GitLab Community Edition/Enterprise Edition up to 18.0.4/18.1.2/18.2.0 cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in GitLab Community Edition and Enterprise Edition up to 18.0.4/18.1.2/18.2.0. Affected by this vulnerability is an unknown functionality. This manipulation causes cross site scripting. The identification of this vulnerability is CVE-2025-4439. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in GitLab Community Edition and Enterprise Edition up to 18.0.4/18.1.2/18.2.0. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

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.

The weakness was shared by joaxcar as 541177. The advisory is shared at gitlab.com. This vulnerability is known as CVE-2025-4439 since 05/08/2025. The exploitation appears to be difficult. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 242641 (GitLab 15.10 < 18.0.5 / 18.1 < 18.1.3 / 18.2 < 18.2.1 (CVE-2025-4439)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 18.0.5, 18.1.3 or 18.2.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (242641), EUVD (EUVD-2025-22463) and CERT Bund (WID-SEC-2025-1627). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Open Source GitLab

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.2

VulDB Base Score: 2.6
VulDB Temp Score: 2.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔒

CNA Base Score: 7.7
CNA Vector (GitLab): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 242641
Nessus Name: GitLab 15.10 < 18.0.5 / 18.1 < 18.1.3 / 18.2 < 18.2.1 (CVE-2025-4439)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Community Edition/Enterprise Edition 18.0.5/18.1.3/18.2.1

Timelineinfo

05/08/2025 CVE reserved
07/23/2025 +76 days Advisory disclosed
07/23/2025 +0 days VulDB entry created
08/09/2025 +17 days VulDB entry last update

Sourcesinfo

Vendor: gitlab.com

Advisory: 541177
Researcher: joaxcar
Status: Confirmed

CVE: CVE-2025-4439 (🔒)
GCVE (CVE): GCVE-0-2025-4439
GCVE (VulDB): GCVE-100-317449
EUVD: 🔒
CERT Bund: WID-SEC-2025-1627 - GitLab: Mehrere Schwachstellen

Entryinfo

Created: 07/23/2025 22:43
Updated: 08/09/2025 02:23
Changes: 07/23/2025 22:43 (66), 07/24/2025 00:26 (7), 07/24/2025 02:46 (1), 07/24/2025 20:34 (2), 08/09/2025 02:23 (12)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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