What is CVE-2026-10086?

CVE-2026-10086 is a high-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-06-25.

How severe is CVE-2026-10086?

High severity. CVSS v3 base score is 8.7 out of 10.

XSS in Gitlab

CVE-2026-10086

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…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (19.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.

Affected products

Gitlab — versions 16.4, 19.0, 19.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@gitlab.com
cve@gitlab.com
cve@gitlab.com (technical-description, permissions-required, exploit)

Frequently asked questions

What is CVE-2026-10086?: CVE-2026-10086 is a high-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-06-25.
How severe is CVE-2026-10086?: High severity. CVSS v3 base score is 8.7 out of 10.