CVE-2026-13443: Tutor LMS <= 3.9.13 - Authenticated (Author+) Stored Cross-Site Scripting via Lesson Attachment Title
The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Lesson Attachment Title in all versions up to, and including, 3.9.13 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-13443?
CVE-2026-13443 has a medium severity rating of 6.4.
How do I fix CVE-2026-13443?
To fix CVE-2026-13443, update the Tutor LMS plugin to version 3.9.14 or later.
What type of vulnerability is CVE-2026-13443?
CVE-2026-13443 is a Stored Cross-Site Scripting (XSS) vulnerability.
Who is affected by CVE-2026-13443?
Authenticated users with Author+ roles in Tutor LMS versions up to 3.9.13 are affected by CVE-2026-13443.
What is the impact of CVE-2026-13443?
The impact of CVE-2026-13443 allows authenticated attackers to inject malicious scripts via Lesson Attachment Titles.