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 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.
Advisories

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Fixes

Solution

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Workaround

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History

Sun, 18 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Sat, 17 Oct 2026 23:00:00 +0000

Type Values Removed Values Added
First Time appeared Thimpress
Thimpress learnpress
Wordpress-extensions
Wordpress-extensions learnpress
Vendors & Products Thimpress
Thimpress learnpress
Wordpress-extensions
Wordpress-extensions learnpress

Sat, 17 Oct 2026 04:00:00 +0000

Type Values Removed Values Added
Description 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 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.
Title LearnPress <= 4.4.10 - Unauthenticated PHP Object Injection via 'checkout-email' Parameter
Weaknesses CWE-502
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-10-18T11:22:46.937Z

Reserved: 2026-10-02T11:52:06.705Z

Link: CVE-2026-104736

cve-icon Vulnrichment

Updated: 2026-10-18T11:15:42.645Z

cve-icon NVD

Status : Received

Published: 2026-10-17T04:16:47.780

Modified: 2026-10-18T12:16:56.217

Link: CVE-2026-104736

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-17T22:45:15Z

Weaknesses