🔐 CVE Alert

CVE-2026-9807

MEDIUM 4.3

Incorrect Authorization in GitLab

CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th

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 accessing private resources due to incorrect authorization enforcement.

CWE CWE-863
Vendor gitlab
Product gitlab
Ecosystems
Industries
Technology
Published May 28, 2026
Last Updated May 28, 2026
Stay Ahead of the Next One

Get instant alerts for gitlab gitlab

Be the first to know when new medium vulnerabilities affecting gitlab gitlab are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Affected Versions

GitLab / GitLab
18.9 < 18.10.7 18.11 < 18.11.4 19.0 < 19.0.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗
hackerone.com: https://hackerone.com/reports/3554993 gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/work_items/590694 about.gitlab.com: https://about.gitlab.com/releases/2026/05/27/patch-release-gitlab-19-0-1-released/

Credits

Thanks [s4dmach1ne](https://hackerone.com/s4dmach1ne) for reporting this vulnerability through our HackerOne bug bounty program