Cross-Site Scripting Vulnerability in GitLab CE/EE
CVE-2025-0811

8.7HIGH

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
27 March 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-0811?

A vulnerability exists in GitLab CE/EE where improper rendering of specific file types can lead to cross-site scripting (XSS). This issue affects all versions from 17.7 before 17.8.6, 17.9 before 17.9.3, and 17.10 before 17.10.1, potentially allowing an attacker to execute arbitrary scripts in the context of the user’s browser. Users are advised to update to the latest versions of GitLab to mitigate this risk.

Affected Version(s)

GitLab 17.7 < 17.8.6

GitLab 17.9 < 17.9.3

GitLab 17.10 < 17.10.1

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-2025-0811 - Proof of Concept

References

https://gitlab.com/gitlab-org/gitlab/-/issues/515566
issue-trackingpermissions-required
https://hackerone.com/reports/2961854
technical-descriptionexploitpermissions-required

CVSS V3.1

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks [yvvdwf](https://hackerone.com/yvvdwf) for reporting this vulnerability through our HackerOne bug bounty program
.
CVE-2025-0811 : Cross-Site Scripting Vulnerability in GitLab CE/EE