{"id":"CVE-2026-93872","revision":"eea95d7561eb47719f972aa6b355184c","records":[{"revision":"eea95d7561eb47719f972aa6b355184c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-93872","aliases":[],"title":"Cotonti 1.0.0 PHP Object Injection via Comments Plugin Edit Action cb Parameter","description":"Cotonti 1.0.0 passes the base64-decoded cb parameter to unserialize() without allowed_classes restriction in the comments plugin EditAction. Registered users with comment write permissions can instantiate arbitrary PHP objects and potentially achieve file write or code execution through gadget chains.","state":0,"publishedAt":"2026-09-18T19:56:37.54+00:00","modifiedAt":"2026-09-24T14:23:20.808+00:00","affected":[{"ecosystem":"Vendor product","name":"Cotonti","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Cotonti\",\n                    \"product\": \"Cotonti\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:composer/cotonti/cotonti\",\n                    \"versions\": [\n                        {\n                            \"version\": \"1.0.0\",\n                            \"lessThanOrEqual\": \"1.0.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"repo\": \"https://github.com/Cotonti/Cotonti\",\n                    \"programFiles\": [\n                        \"plugins/comments/controllers/actions/EditAction.php\",\n                        \"system/cache.php\"\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":7.7,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/Cotonti/Cotonti/issues/1894","https://github.com/Cotonti/Cotonti/pull/1897","https://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/comments/controllers/actions/EditAction.php","https://github.com/Cotonti/Cotonti/blob/1.0.0/system/cache.php","https://github.com/Cotonti/Cotonti","https://www.vulncheck.com/advisories/cotonti-1.0.0-php-object-injection-via-comments-plugin-edit-action-cb-parameter"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-93872","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-93872","identifiers":["CVE-2026-93872"]},"retained":false,"historicalAffected":[]}],"coverage":[]}