{"id":"UBUNTU-CVE-2023-1555","details":"An issue has been discovered in GitLab affecting all versions starting from 15.2 before 16.1.5, all versions starting from 16.2 before 16.2.5, all versions starting from 16.3 before 16.3.1. A namespace-level banned user can access the API.","modified":"2025-10-24T05:01:10Z","published":"2023-09-01T11:15:00Z","upstream":["CVE-2023-1555"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-1555"},{"type":"REPORT","url":"https://hackerone.com/reports/1911908"},{"type":"REPORT","url":"https://gitlab.com/gitlab-org/gitlab/-/issues/398587"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-1555"}],"affected":[{"package":{"name":"gitlab","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/gitlab@8.5.8+dfsg-5?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.4.3+dfsg-9","8.4.3+dfsg-12","8.5.8+dfsg-5"],"ecosystem_specific":{"binaries":[{"binary_version":"8.5.8+dfsg-5","binary_name":"gitlab"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-1555.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}