CVE-2026-105397 LearnPress WordPress Plugin through 4.4.9.1 Stored XSS via Quiz Question Hint and Explanation
Authenticated instructors can inject malicious scripts into quiz fields, executing code in student sessions via stored XSS in the LearnPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-105397?
CVE-2026-105397 is a medium-severity cross-site scripting vulnerability in ThimPress LearnPress, published on 5 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
LearnPress plugin for WordPress through 4.4.9.1 contains a stored cross-site scripting vulnerability that allows authenticated instructors to inject scripts via quiz question hint and explanation fields. Attackers with the Instructor role can submit unsanitized payloads through the update_question AJAX handler that execute in the session of every student taking the quiz.
Weakness: CWE-79
Which versions are affected by CVE-2026-105397?
How do I fix CVE-2026-105397?
No fix has been published for CVE-2026-105397 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-2026-105397 being exploited?
There is no known exploitation of CVE-2026-105397 in the wild and no public exploit code.
Sources
Also known as GHSA-hrc8-hp2q-rr9f.