CVE-2026-3074

MEDIUM

Authorization Bypass Through User-Controlled Key in GitLab

Title source: cna

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.7 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to download private debugging symbols from inaccessible projects due to improper access control.

References (3)

Core 3

Core References

Exploit technical-description exploit permissions-required

HackerOne Bug Bounty Report #3556163

https://hackerone.com/reports/3556163

https://gitlab.com/gitlab-org/gitlab/-/work_items/591229

https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/

Scores

CVSS v3 4.3

EPSS 0.0002

EPSS Percentile 6.1%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-639

Status published

Products (4)

GitLab/GitLab 16.7 - 18.9.7

gitlab/gitlab 16.7.0 - 18.9.7 (2 CPE variants)

GitLab/GitLab 18.10 - 18.10.6

GitLab/GitLab 18.11 - 18.11.3

Published May 14, 2026

Tracked Since May 14, 2026