What is CVE-2026-6277?

CVE-2026-6277 is a medium-severity vulnerability in Gitlab, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-06-11.

How severe is CVE-2026-6277?

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

Auth bypass in Gitlab

CVE-2026-6277

GitLab has remediated an issue in GitLab EE affecting all versions from 13.9 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with Security Manager-role per…

Vulnerability class: Broken Access Control

EPSS: 0.002 (8.0th 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:N/I:L/A:N.

Affected products

Gitlab — versions 13.9, 18.11, 19.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

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

Frequently asked questions

What is CVE-2026-6277?: CVE-2026-6277 is a medium-severity vulnerability in Gitlab, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-06-11.
How severe is CVE-2026-6277?: Medium severity. CVSS v3 base score is 4.3 out of 10.