CVE-2026-104736

LearnPress <= 4.4.10 - Unauthenticated PHP Object Injection via 'checkout-email' Parameter

CRITICAL 9.8EPSS 0.4%

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.

Affected: thimpress · LearnPress – WordPress LMS Plugin for Create and Sell Online Courses
CVSS v3.1 Wordfence: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.44% chance of exploitation in the next 30 days, 37th percentile
Published: 2026-10-17

Proof-of-concept exploits (1)

BIBILZERODAY/CVE-2026-104736---Proof-of-Concept-PoC-Exploit-Details0★ · 2026-10-16

CVE-2026-104736

Proof-of-concept exploits (1)

References

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