CVE-2026-0595

HIGH

Gitlab < 18.6.6 - XSS

Title source: rule

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.9 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4 that, under certain conditions could have allowed an authenticated user to add unauthorized email addresses to victim accounts through HTML injection in test case titles.

References (3)

[Release Notes, Vendor Advisory] https://about.gitlab.com/releases/2026/02/10/patch-release-gitlab-18-8-4-released/

[Broken Link, Issue Tracking] https://gitlab.com/gitlab-org/gitlab/-/issues/584975

[Permissions Required] https://hackerone.com/reports/3486862

Scores

CVSS v3 7.3

EPSS 0.0006

EPSS Percentile 18.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Classification

CWE

CWE-79

Status published

Affected Products (2)

gitlab/gitlab < 18.6.6

gitlab/gitlab < 18.6.6

Timeline

Published Feb 11, 2026

Tracked Since Feb 18, 2026