CVE-2026-5309

MEDIUM

Authorization Bypass Through User-Controlled Key in GitLab

Title source: cna
STIX 2.1

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 18.6 before 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1 that under certain conditions could have allowed an authenticated user to read or modify another group's virtual registry cleanup policy settings without authorization.

References (3)

Core 3
Core References
Exploit technical-description exploit permissions-required
HackerOne Bug Bounty Report #3628793
https://hackerone.com/reports/3628793

Scores

CVSS v3 5.4
EPSS 0.0017
EPSS Percentile 6.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-639
Status published
Products (5)
gitlab/gitlab 19.1.0
GitLab/GitLab 18.6 - 18.11.6
gitlab/gitlab 18.6.0 - 18.11.6
GitLab/GitLab 19.0 - 19.0.3
GitLab/GitLab 19.1 - 19.1.1
Published Jun 25, 2026
Tracked Since Jun 25, 2026