What is CVE-2026-1516?

CVE-2026-1516 is a medium-severity vulnerability in Gitlab, classified under Code Injection. CVSS score: 5.7/10. Published 2026-04-08.

How severe is CVE-2026-1516?

Medium severity. CVSS v3 base score is 5.7 out of 10.

RCE in Gitlab

CVE-2026-1516

GitLab has remediated an issue in GitLab EE affecting all versions from 18.0.0 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that in Code Quality reports could have allowed an authenticated user to leak IP addresses of users…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.000 (12.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N.

Affected products

Gitlab — versions 18.0.0, 18.9, 18.10

Weakness classification (CWE)

CWE-94 — Code Injection

References

HackerOne Bug Bounty Report #3514461 (technical-description, exploit, permissions-required)
gitlab.com/gitlab-org/gitlab/-/work_items/587893
about.gitlab.com/releases/2026/04/08/patch-release-gitlab-18-10-3-released/

Frequently asked questions

What is CVE-2026-1516?: CVE-2026-1516 is a medium-severity vulnerability in Gitlab, classified under Code Injection. CVSS score: 5.7/10. Published 2026-04-08.
How severe is CVE-2026-1516?: Medium severity. CVSS v3 base score is 5.7 out of 10.