{"id":"UBUNTU-CVE-2020-26409","details":"A DOS vulnerability exists in Gitlab CE/EE \u003e=10.3, \u003c13.4.7,\u003e=13.5, \u003c13.5.5,\u003e=13.6, \u003c13.6.2 that allows an attacker to trigger uncontrolled resource by bypassing input validation in markdown fields.","modified":"2025-10-24T04:48:47Z","published":"2020-12-11T02:15:00Z","upstream":["CVE-2020-26409"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26409"},{"type":"REPORT","url":"https://about.gitlab.com/releases/2020/12/07/security-release-gitlab-13-6-2-released/"},{"type":"REPORT","url":"https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26409.json"},{"type":"REPORT","url":"https://gitlab.com/gitlab-org/gitlab/-/issues/259626"},{"type":"REPORT","url":"https://hackerone.com/reports/990461"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-26409"}],"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_name":"gitlab","binary_version":"8.5.8+dfsg-5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-26409.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:N/A:H"},{"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":"low"}]}