What is CVE-2026-18433?

CVE-2026-18433 is a medium-severity vulnerability in Gitlab, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-08-12.

How severe is CVE-2026-18433?

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

Auth bypass in Gitlab

CVE-2026-18433

GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.1.4 and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user to read policy configuration belonging to a namespace…

Vulnerability class: Broken Access Control

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 19.1, 19.2

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

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

Frequently asked questions

What is CVE-2026-18433?: CVE-2026-18433 is a medium-severity vulnerability in Gitlab, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-08-12.
How severe is CVE-2026-18433?: Medium severity. CVSS v3 base score is 4.3 out of 10.