{"id":"CVE-2026-112862","published":"2026-10-23T09:17:06.393","lastModified":"2026-10-23T16:06:31.143","description":"Deserialization of Untrusted Data vulnerability in xnau webdesign Participants Database participants-database allows Object Injection.This issue affects Participants Database: from n/a through 2.7.8.5.","cvssScore":9.8,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-502"],"vendors":[],"products":[],"references":[{"url":"https://patchstack.com/database/wordpress/plugin/participants-database/vulnerability/wordpress-participants-database-plugin-2-7-8-5-php-object-injection-vulnerability?_s_id=cve","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"The Participants Database plugin for WordPress prior to version 2.7.8.6 contains a deserialization vulnerability (CWE-502) that allows attackers to inject and execute arbitrary PHP objects via untrusted serialized data, leading to full system compromise including remote code execution.","exploitability":"Exploitation is straightforward for an attacker with network access to the plugin's endpoints that accept serialized input; no authentication or user interaction is required due to CVSS metrics AV:N/AC:L/PR:N/UI:N.","blast_radius":"Successful exploitation grants full confidentiality, integrity, and availability impact (C:H/I:H/A:H), enabling attackers to steal sensitive data, modify content, install backdoors, or take complete control of the WordPress site and potentially the underlying server.","remediation":"Upgrade to Participants Database version 2.7.8.6 or later, which contains the vendor's official fix for this deserialization vulnerability.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["deserialization","object-injection","wordpress","rce","webapp"],"model":"garnet-coder","analyzedAt":"2026-10-25T08:43:40.739Z"}}