What is CVE-2026-2973?

CVE-2026-2973 is a medium-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-03-25.

How severe is CVE-2026-2973?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Gitlab

CVE-2026-2973

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.7 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an authenticated user to execute arbitrary JavaScript in a user's browser d…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (13.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Gitlab — versions 17.7, 18.9, 18.10

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

HackerOne Bug Bounty Report #3566802 (technical-description, exploit, permissions-required)
gitlab.com/gitlab-org/gitlab/-/work_items/591049
about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/

Frequently asked questions

What is CVE-2026-2973?: CVE-2026-2973 is a medium-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-03-25.
How severe is CVE-2026-2973?: Medium severity. CVSS v3 base score is 5.4 out of 10.