CVE-2026-84739

8.7 Élevée

Publiée le 29/09/2026 à 12:17 · Modifiée le 05/10/2026 à 19:06 · Analysée par le NVD · Source : cve@gitlab.com

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.

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Produits concernés

GitLab
Gitlab gitlab

Scores CVSS

Version	Score	Source	Vecteur
3.1	8.7 Élevée	cve@gitlab.com	`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N`

Faiblesses (CWE)

CWE-79

Références

https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-1-released/ Release NotesVendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/work_items/627316 Broken Link
https://hackerone.com/reports/3938482 Permissions Required

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories