CVE-2026-8589

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

State: Published
Severity: 7.3 High
Published: Jun 11, 2026
Updated: Jun 11, 2026
Reserved: May 14, 2026

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 13.1.4 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user to add unauthorized email addresses to a targeted user's account due to improper sanitization of user-supplied input in certain group setting fields.

Scores

CVSS	Score	Vector	Source
3.1	7.3 High	CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N	GitLab

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
GitLabGitLab	13.1.4 to before 18.10.8Affected 18.11 to before 18.11.5Affected 19.0 to before 19.0.2Affected

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/600099
HackerOne Bug Bounty Report #3722842technical-descriptionexploitpermissions-required
https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/

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