What is CVE-2026-6515?

CVE-2026-6515 is a medium-severity vulnerability in Gitlab, classified under Insufficient Session Expiration. CVSS score: 5.4/10. Published 2026-04-22.

How severe is CVE-2026-6515?

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

Vulnerability in Gitlab

CVE-2026-6515

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that could have allowed a user to use invalidated or incorrectly scoped credentials to access Vir…

EPSS: 0.000 (3.5th 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:N/S:U/C:L/I:L/A:N.

Affected products

Gitlab — versions 18.2, 18.10, 18.11

Weakness classification (CWE)

CWE-613 — Insufficient Session Expiration

References

gitlab.com/gitlab-org/gitlab/-/work_items/595993
about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/

Frequently asked questions

What is CVE-2026-6515?: CVE-2026-6515 is a medium-severity vulnerability in Gitlab, classified under Insufficient Session Expiration. CVSS score: 5.4/10. Published 2026-04-22.
How severe is CVE-2026-6515?: Medium severity. CVSS v3 base score is 5.4 out of 10.