CVE-2026-3073

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 17.6 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user with developer-role permissions to bypass PyPI package protection rules and upload restricted packages due to improper authorization checks.

References (3)

Core 3

Core References

https://gitlab.com/gitlab-org/gitlab/-/work_items/591227

Exploit technical-description exploit permissions-required

HackerOne Bug Bounty Report #3532563

https://hackerone.com/reports/3532563

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

Scores

CVSS v3 4.3

EPSS 0.0001

EPSS Percentile 1.5%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-639

Status published

Products (4)

GitLab/GitLab 17.6 - 18.9.7

gitlab/gitlab 17.6.0 - 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