Improper Path Validation in GitLab Leading to Unauthenticated JavaScript Execution
CVE-2026-10712

8HIGH

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
25 June 2026

What is CVE-2026-10712?

A security flaw in GitLab CE/EE allows an unauthenticated user to execute arbitrary JavaScript in a user's browser session due to improper path validation in specific conditions. This vulnerability affects various versions of the product, posing a risk as it could enable attackers to manipulate user sessions without requiring authentication. It's critical for users to apply the necessary updates to mitigate this risk.

Affected Version(s)

GitLab 18.10 < 18.11.6

GitLab 19.0 < 19.0.3

GitLab 19.1 < 19.1.1

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/601857
https://hackerone.com/reports/3688717
technical-descriptionexploitpermissions-required
https://docs.gitlab.com/releases/patches/patch-release-gi...

CVSS V3.1

Score:
8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

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