CVE-2026-13319

Medium

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.

SeverityMedium
CVSS4.3
Exploit probability—
ProductGitlab
PublishedOct 22, 2026
First seenOct 22, 2026

How to fix

Update
  • gitlab gitlab19.3.6, 19.4.3 or later

Affected products

ProductAffected versionsFixed in
gitlab gitlab15.10 ≤ v < 19.3.6, 19.4.0 ≤ v < 19.4.3, 19.5.019.3.6, 19.4.3

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