CVE-2026-9807

Published: May 28, 2026Modified: Oct 14, 2026

4.3

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploitability: 2.8 / Impact: 1.4

Source: cve@gitlab.com (Secondary)

Description

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.

Affected (6)

Products: Gitlab: Gitlab

Gitlab

1 product

Gitlab

Configuration A

6 vulnerable

Vulnerable Software	Affected Versions
Gitlab Gitlab	18.11.0 ≤ version < 18.11.4
Gitlab Gitlab	18.9.0 ≤ version < 18.10.7
Gitlab Gitlab	18.11.0 ≤ version < 18.11.4
Gitlab Gitlab	18.9.0 ≤ version < 18.10.7
Gitlab Gitlab	Version 19.0.0
Gitlab Gitlab	Version 19.0.0

Related CWEs

CWE-863

Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

References (3)

https://about.gitlab.com/releases/2026/05/27/patch-release-gitlab-19-0-1-released/

Source: cve@gitlab.com

Release Notes

https://gitlab.com/gitlab-org/gitlab/-/work_items/590694

Source: cve@gitlab.com

Broken Link

https://hackerone.com/reports/3554993

Source: cve@gitlab.com

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Timeline

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