CVE-2026-12732 Cross-site scripting in LearnPress – WordPress LMS Plugin for Create and Sell Online Courses
Authenticated contributors can inject arbitrary scripts via the class_wrapper_form shortcode attribute, leading to stored XSS execution for other users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-12732?
CVE-2026-12732 is a medium-severity cross-site scripting vulnerability in thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses, published on 1 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-12732?
How do I fix CVE-2026-12732?
No fix has been published for CVE-2026-12732 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-12732 being exploited?
There is no known exploitation of CVE-2026-12732 in the wild and no public exploit code.
Sources
Also known as GHSA-qrp7-xr7v-h39q.