🔐 CVE Alert

CVE-2026-13319

MEDIUM 4.3

Authorization Bypass Through User-Controlled Key in GitLab

CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.10 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, could have allowed an authenticated to read milestone metadata, including titles, descriptions, and full project paths, from arbitrary private projects across the instance without any project membership, due to missing authorization checks on a user-supplied project filter parameter in the group milestones API.

CWE CWE-639
Vendor gitlab
Product gitlab
Ecosystems
Industries
Technology
Published Oct 21, 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
15.10 < 19.3.6 19.4 < 19.4.3 19.5 < 19.5.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗
gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/work_items/604064 hackerone.com: https://hackerone.com/reports/3792168 docs.gitlab.com: https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/

Credits

Thanks [a0xnirudh](https://hackerone.com/a0xnirudh) for reporting this vulnerability through our HackerOne bug bounty program