{"id":"UBUNTU-CVE-2022-4131","details":"An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.8 before 15.5.7, all versions starting from 15.6 before 15.6.4, all versions starting from 15.7 before 15.7.2. An attacker may cause Denial of Service on a GitLab instance by exploiting a regex issue in how the application parses user agents.","modified":"2025-10-24T04:53:17Z","published":"2023-01-12T04:15:00Z","upstream":["CVE-2022-4131"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-4131"},{"type":"REPORT","url":"https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-4131.json"},{"type":"REPORT","url":"https://gitlab.com/gitlab-org/gitlab/-/issues/383598"},{"type":"REPORT","url":"https://hackerone.com/reports/1772063"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2022-4131"}],"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/2022/UBUNTU-CVE-2022-4131.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}