CVE-2026-8589: GitLab

High severity, CVSS 8.7. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• GitLab GitLab: from 13.1.4, before 18.10.8 (fixed in 18.10.8); from 18.11.0, before 18.11.5 (fixed in 18.11.5); from 19.0.0, before 19.0.2 (fixed in 19.0.2)

Published 2026-06-11. Last modified 2026-06-17.