CVE-2025-6454 - CVE House
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Status published High CVE-2025-6454

Server-Side Request Forgery (SSRF) in GitLab

Vulnerability Description

An issue has been discovered in GitLab CE/EE affecting all versions from 16.11 before 18.1.6, 18.2 before 18.2.6, and 18.3 before 18.3.2 that could have allowed authenticated users to make unintended internal requests through proxy environments by injecting crafted sequences.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Thanks [ppee](https://hackerone.com/ppee) for reporting this vulnerability through our HackerOne bug bounty program

References

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CVE-2025-9642
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Affected Vendor

Affected Software

GitLab
Vulnerable Versions:
16.11, 18.2, 18.3

Timeline

Official Publish: September 12th, 2025
Last Modified: September 12th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Weaknesses (CWE)

CWE-918

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1213 Data from Information Repositories
Collection
T1005 Data from Local System
Collection
T1046 Network Service Discovery
Discovery