{"id":"CVE-2026-81907","title":"Concrete CMS 9.5.2 and below is vulnerable to Cross-Site Request Forgery (CSRF) in the Express \"Clear Entries\" function (POST /index.php/dashboard/system/express/entities/delete_entries) because the controller records but does not enforc…","summary":"Concrete CMS 9.5.2 and below is vulnerable to Cross-Site Request Forgery (CSRF) in the Express \"Clear Entries\" function (POST /index.php/dashboard/system/express/entities/delete_entries) because the controller records but does not enforc…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","cwe":["CWE-352"],"vendor":"Concrete CMS","product":"Concrete CMS","affected":["concrete_cms >= 5.0.0 <= 9.5.2"],"published":"2026-09-11","updated":"2026-09-15","sourceUpdated":"2026-09-15T14:40:24.370","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-81907","references":[{"url":"https://documentation.concretecms.org/developers/introduction/version-history/953-release-notes","label":"ff5b8ace-8b95-4078-9743-eac1ca5451de"}],"tags":["nvd","cve.org"],"epss":0.00211,"epssPercentile":0.11658,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-14T12:51:03.281243Z"},"cvssSource":"cna","ingestedAt":"2026-09-14T15:23:07.429Z","slug":"CVE-2026-81907","body":"## Overview\n\nConcrete CMS 9.5.2 and below is vulnerable to Cross-Site Request Forgery (CSRF) in the Express \"Clear Entries\" function (POST /index.php/dashboard/system/express/entities/delete_entries) because the controller records but does not enforce a failed CSRF token check, allowing the destructive operation to proceed when the token is missing or invalid. A remote unauthenticated attacker can force an authenticated administrator who visits an attacker-controlled page to permanently delete all entries belonging to an attacker-selected Express entity on a web application to which the administrator is currently authenticated. Because the default Contact Express object ships with a fixed entity UUID, the target identifier can be obtained without dashboard access. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 6.1 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N. Thanks Pratik Zanjurne for reporting.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}