🔐 CVE Alert

CVE-2026-2104

MEDIUM 4.3

Authorization Bypass Through User-Controlled Key in GitLab

CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
2th

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user to access confidential issues assigned to other users via CSV export due to insufficient authorization checks.

CWE CWE-639
Vendor gitlab
Product gitlab
Ecosystems
Industries
Technology
Published Apr 8, 2026
Last Updated Apr 9, 2026
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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
18.2 < 18.8.9 18.9 < 18.9.5 18.10 < 18.10.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗
hackerone.com: https://hackerone.com/reports/3541476 gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/work_items/589021 about.gitlab.com: https://about.gitlab.com/releases/2026/04/08/patch-release-gitlab-18-10-3-released/

Credits

Thanks [ahacker1](https://hackerone.com/ahacker1) for reporting this vulnerability through our HackerOne bug bounty program