CVE-2026-3093

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 14.0 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an attacker to execute arbitrary JavaScript in another user's browser via a crafted URL, due to improper sanitization of user-controlled input.

CVSS Vector

References

• https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/
• https://gitlab.com/gitlab-org/gitlab/-/work_items/591274
• https://hackerone.com/reports/3539833