Cross Site Scripting Vulnerability in GitLab-EE Software by GitLab
CVE-2025-0555

6.1MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
3 March 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-0555?

A Cross Site Scripting (XSS) vulnerability exists in GitLab-EE that affects multiple versions, enabling attackers to evade security measures and run arbitrary scripts within users' browsers. This flaw can lead to unauthorized actions being executed under certain conditions, compromising user data and integrity. It's crucial for users and administrators to promptly update their installations to the latest secure versions.

Affected Version(s)

GitLab 16.6 < 17.7.6

GitLab 17.8 < 17.8.4

GitLab 17.9 < 17.9.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-0555 - Proof of Concept

References

https://gitlab.com/gitlab-org/gitlab/-/issues/514004
issue-trackingpermissions-required
https://hackerone.com/reports/2939833
technical-descriptionexploitpermissions-required

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

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