GitLab Community Edition/Enterprise Edition up to 18.1.3/18.2.1 cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability has been found in GitLab Community Edition and Enterprise Edition up to 18.1.3/18.2.1 and classified as problematic. This vulnerability affects unknown code. The manipulation leads to cross site scripting. This vulnerability is referenced as CVE-2025-6186. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in GitLab Community Edition and Enterprise Edition up to 18.1.3/18.2.1. This issue affects an unknown part. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-80. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. Impacted is integrity. The summary by CVE is:

An issue has been discovered in GitLab CE/EE affecting all versions from 18.1 before 18.1.4, and 18.2 before 18.2.2 that could have allowed authenticated users to achieve account takeover by injecting malicious HTML into work item names.

The weakness was published by joaxcar as 549844. It is possible to read the advisory at gitlab.com. The identification of this vulnerability is CVE-2025-6186 since 06/16/2025. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 260178 (Linux Distros Unpatched Vulnerability : CVE-2025-6186), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 18.1.4 or 18.2.2 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (260178) and CERT Bund (WID-SEC-2025-1816). Be aware that VulDB is the high quality source for 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: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔒

CNA Base Score: 8.7
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-80 / CWE-74 / CWE-707
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: 260178
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-6186

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Community Edition/Enterprise Edition 18.1.4/18.2.2

Timelineinfo

06/16/2025 CVE reserved
08/13/2025 +58 days Advisory disclosed
08/13/2025 +0 days VulDB entry created
09/02/2025 +20 days VulDB entry last update

Sourcesinfo

Vendor: gitlab.com

Advisory: 549844
Researcher: joaxcar
Status: Confirmed

CVE: CVE-2025-6186 (🔒)
GCVE (CVE): GCVE-0-2025-6186
GCVE (VulDB): GCVE-100-320015
CERT Bund: WID-SEC-2025-1816 - GitLab: Mehrere Schwachstellen

Entryinfo

Created: 08/13/2025 20:43
Updated: 09/02/2025 05:31
Changes: 08/13/2025 20:43 (66), 08/13/2025 21:25 (7), 08/14/2025 18:09 (1), 08/16/2025 04:28 (11), 09/02/2025 05:31 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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