Answer in brief
CVE-2026-104736 records a Critical severity (CVSS 9.8) vulnerability in LearnPress <= 4.4.10 - Unauthenticated PHP Object Injection via 'checkout-email' Parameter. The current sources do not mark it as known exploited. The current feed maps thimpress/LearnPress – WordPress LMS Plugin for Create and Sell Online Courses (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps thimpress/LearnPress – WordPress LMS Plugin for Create and Sell Online Courses (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| thimpress/LearnPress – WordPress LMS Plugin for Create and Sell Online Coursesgeneric | >=0 <=4.4.10 | Not reported |
Published upstream
Oct 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.