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.
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Fixes

Solution

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Workaround

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History

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: 2026-10-17T03:43:28.046Z

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

Link: CVE-2026-104736

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

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

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

Link: CVE-2026-104736

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-17T06:00:04Z

Weaknesses