What is CVE-2026-9807?

CVE-2026-9807 is a medium-severity vulnerability in Gitlab, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-05-28.

How severe is CVE-2026-9807?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Gitlab

CVE-2026-9807

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.9 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that under certain conditions could have allowed a blocked Project Access Token to continue access…

Vulnerability class: Broken Access Control

EPSS: 0.000 (2.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Gitlab — versions 19.0.0, 18.11, 19.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

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

Frequently asked questions

What is CVE-2026-9807?: CVE-2026-9807 is a medium-severity vulnerability in Gitlab, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-05-28.
How severe is CVE-2026-9807?: Medium severity. CVSS v3 base score is 4.3 out of 10.