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.
References
| Link | Resource |
|---|---|
| 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 |
Configurations
Configuration 1 (hide)
|
History
05 Oct 2026, 17:06
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:gitlab:gitlab:19.4.0:*:*:*:community:*:*:* cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* cpe:2.3:a:gitlab:gitlab:19.4.0:*:*:*:enterprise:*:*:* |
|
| First Time |
Gitlab
Gitlab gitlab |
|
| References | () https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-1-released/ - Release Notes, Vendor Advisory | |
| References | () https://gitlab.com/gitlab-org/gitlab/-/work_items/627316 - Broken Link | |
| References | () https://hackerone.com/reports/3938482 - Permissions Required |
29 Sep 2026, 10:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-09-29 10:17
Updated : 2026-10-05 17:06
NVD link : CVE-2026-84739
Mitre link : CVE-2026-84739
CVE.ORG link : CVE-2026-84739
JSON object : View
Products Affected
gitlab
- gitlab
CWE
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')