{"id":"CVE-2021-40098","details":"An issue was discovered in Concrete CMS through 8.5.5. Path Traversal leading to RCE via external form by adding a regular expression.","modified":"2026-04-10T04:37:44.830587Z","published":"2021-09-27T12:15:08.007Z","references":[{"type":"ADVISORY","url":"https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes"},{"type":"REPORT","url":"https://hackerone.com/reports/1102080"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/concretecms/concretecms","events":[{"introduced":"0"},{"last_affected":"eb2e83dd9fc3f0eefa748ccc22bc4aed8ef85410"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"8.5.5"}]}}],"versions":["5.7.0","5.7.0.1","5.7.0.3","5.7.0.4","5.7.1","5.7.2","5.7.2.1","5.7.3","5.7.3.1","5.7.4.1","5.7.5.2","5.7.5.5","5.7.5.6","5.7.5.7","8.1.0","8.2.0","8.2.0RC2","8.2.1","8.3.1","8.4.1","8.4.2","8.4.3","8.4.4","8.4.5","8.5.0","8.5.1","8.5.2","8.5.3","8.5.4","8.5.5"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-40098.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}