{"id":"CVE-2026-104736","title":"LearnPress <= 4.4.10 - Unauthenticated PHP Object Injection via 'checkout-email' Parameter","summary":"The LearnPress plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 4.4.10 via deserialization of untrusted input from the 'checkout-email' request parameter during the checkout AJAX action. The va…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-502"],"vendor":"thimpress","product":"LearnPress – WordPress LMS Plugin for Create and Sell Online Courses","affected":["learnpress_wordpress_lms_plugin_for_create_and_sell_online_courses <= 4.4.10"],"published":"2026-10-17","updated":"2026-10-17","sourceUpdated":"2026-10-17T03:43:28.046Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-104736","references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/3e28e008-0ec1-4262-9ac0-6170cf8b8bdf?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/learnpress/tags/4.4.9.1/inc/class-lp-session-handler.php#L373"},{"url":"https://plugins.trac.wordpress.org/browser/learnpress/tags/4.4.9.1/inc/class-lp-checkout.php#L377"},{"url":"https://plugins.trac.wordpress.org/browser/learnpress/tags/4.4.9.1/inc/class-lp-checkout.php#L523"},{"url":"https://plugins.trac.wordpress.org/browser/learnpress/tags/4.4.9.1/inc/class-lp-ajax.php#L21"},{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&old=3750024%40learnpress&new=3750024%40learnpress"}],"tags":["cve.org","exploit-available"],"ingestedAt":"2026-10-17T03:58:44.708Z","epss":0.00438,"epssPercentile":0.36594,"exploits":{"github":1,"githubRepos":["https://github.com/BIBILZERODAY/CVE-2026-104736---Proof-of-Concept-PoC-Exploit-Details"],"checkedAt":"2026-10-17T17:27:17.315Z"},"exploitAvailable":true,"slug":"CVE-2026-104736","body":"## Overview\n\nThe LearnPress plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 4.4.10 via deserialization of untrusted input from the 'checkout-email' request parameter during the checkout AJAX action. The value is passed through sanitize_text_field(), which does not strip serialized object syntax, then stored in the LearnPress session table and later fed to LP_Helper::maybe_unserialize() → unserialize() (without an allowed_classes restriction) by LP_Session_Handler::get() on subsequent requests. This makes it possible for unauthenticated attackers to inject a PHP Object.\n\n## Affected\n\n- `learnpress_wordpress_lms_plugin_for_create_and_sell_online_courses <= 4.4.10`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":66,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":223887,"id":"CVE-2026-104736","ts":1792267192812,"field":"exploit_available","old":"false","new":"true"}]}