PT-2026-52195 · Gitlab · Gitlab

Published 2026-06-25 · Updated 2026-06-25 · CVE-2026-10086

Mitre

CVSS v3.1

8.7

High

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

GitLab has remediated an issue in GitLab EE affecting all versions from 16.4 before 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1 that under certain conditions could have allowed an authenticated user with developer-role permissions to execute arbitrary client-side code in the context of another user's session, due to improper sanitization of user-supplied input.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-10086

Affected Products

Gitlab

References · 4

• 🔥 https://hackerone.com/reports/3734800 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-10086 · Security Note
• https://gitlab.com/gitlab-org/gitlab/-/work_items/601634 · Note
• https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-1-1-released · Note