Medium severity · published Oct 21, 2026
CVE-2026-13319
Authorization Bypass Through User-Controlled Key in GitLab
New
6.5
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
GitLab · GitLab
15.10 before 19.3.6; 19.4 before 19.4.3; 19.5 before 19.5.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-13319
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-13319
Release Notes
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/
Permissions Required
https://gitlab.com/gitlab-org/gitlab/-/work_items/604064
Permissions Required
https://hackerone.com/reports/3792168
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