What is CVE-2026-15423?

CVE-2026-15423 is a high-severity vulnerability in Gitlab, classified under Incorrect Authorization. CVSS score: 8.5/10. Published 2026-08-12.

How severe is CVE-2026-15423?

High severity. CVSS v3 base score is 8.5 out of 10.

Auth bypass in Gitlab

CVE-2026-15423

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.0 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user with developer-role permission…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N.

Affected products

Gitlab — versions 19.0, 19.1, 19.2

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

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

Frequently asked questions

What is CVE-2026-15423?: CVE-2026-15423 is a high-severity vulnerability in Gitlab, classified under Incorrect Authorization. CVSS score: 8.5/10. Published 2026-08-12.
How severe is CVE-2026-15423?: High severity. CVSS v3 base score is 8.5 out of 10.