Description
The LearnPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'class_wrapper_form' shortcode attribute in versions up to, and including, 4.4.0. This is due to insufficient input sanitization and output escaping in the FilterCourseTemplate::sections() method at line 98, where the attacker-controlled attribute is inserted into an HTML class attribute via sprintf('<form class="%s">', $class_wrapper_form) without esc_attr() escaping. The FilterCourseShortcode::render() handler does not apply shortcode_atts() filtering, so raw user attributes flow directly through do_action('learn-press/filter-courses/layout', $data) into the template. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses
Default version status: unaffected
0 to ≤ 4.4.0affected
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/09c8db69-60fa-4087-9096-5d34ce44f616?source=cve ↗
- https://plugins.trac.wordpress.org/browser/learnpress/tags/4.4.0/inc/TemplateHooks/Course/FilterCourseTemplate.php#L98 ↗
- https://plugins.trac.wordpress.org/browser/learnpress/tags/4.4.0/inc/Shortcodes/Course/FilterCourseShortcode.php#L29 ↗
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3587186%40learnpress&new=3587186%40learnpress&sfp_email=&sfph_mail= ↗