What is CVE-2026-8589?

CVE-2026-8589 is a high-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 7.3/10. Published 2026-06-11.

How severe is CVE-2026-8589?

High severity. CVSS v3 base score is 7.3 out of 10.

XSS in Gitlab

CVE-2026-8589

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 ad…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (17.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N.

Affected products

Gitlab — versions 13.1.4, 18.11, 19.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@gitlab.com (Release Notes)
cve@gitlab.com (Issue Tracking)
cve@gitlab.com (Permissions Required, technical-description, permissions-required, exploit)

Frequently asked questions

What is CVE-2026-8589?: CVE-2026-8589 is a high-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 7.3/10. Published 2026-06-11.
How severe is CVE-2026-8589?: High severity. CVSS v3 base score is 7.3 out of 10.