CVEvulnerability
CVE-2026-84739
8.7 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-09-29
- Last modified
- 2026-10-05
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.7 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
- Weaknesses
- CWE-79
Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.11 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user to execute arbitrary JavaScript in the context of another user's browser session due to improper sanitization of path components in the merge request diff viewer.
Affected configurations
• gitlab gitlab (>= 13.11.0 < 19.2.7)
• gitlab gitlab (>= 19.3.0 < 19.3.3)
• gitlab gitlab 19.4.0
Related
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness
References
- https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-1-released/ Release Notes, Vendor Advisory
- https://gitlab.com/gitlab-org/gitlab/-/work_items/627316 Broken Link
- https://hackerone.com/reports/3938482 Permissions Required