Stored Cross-Site Scripting Vulnerability in GitLab by GitLab Inc.
CVE-2025-9222

8.7HIGH

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
9 January 2026

What is CVE-2025-9222?

A vulnerability has been identified in GitLab CE/EE which allows an authenticated user to perform stored cross-site scripting (XSS) attacks through GitLab Flavored Markdown. This issue affects multiple versions of GitLab, potentially leading to user data manipulation and private information exposure. Successful exploitation requires user interaction and is contingent upon exploiting the Markdown parsing functionalities within the platform.

Affected Version(s)

GitLab 18.2.2 < 18.5.5

GitLab 18.6 < 18.6.3

GitLab 18.7 < 18.7.1

References

https://gitlab.com/gitlab-org/gitlab/-/issues/562561
issue-trackingpermissions-required
https://hackerone.com/reports/3297483
technical-descriptionexploitpermissions-required
https://about.gitlab.com/releases/2026/01/07/patch-releas...

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

  • Vulnerability published

  • Vulnerability Reserved

Credit

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