CVE-2026-13443
MediumCVSS 6.4Exploitation Probability (EPSS)
Low risk11th percentile — higher than 11% of all known CVEs
Summary
The Tutor LMS plugin for WordPress up to version 3.9.13 inclusive is vulnerable to Stored Cross-Site Scripting via Lesson Attachment Title due to insufficient input sanitization and output escaping.
Risk Assessment
Authenticated attackers with author-level access or higher can inject arbitrary scripts that execute whenever a user visits an affected page, potentially leading to session hijacking, defacement, or further attacks.
Recommendation
Immediately update the Tutor LMS plugin to the latest available version that fixes this vulnerability. Additionally, consider restricting author permissions and regularly auditing content.
Original NVD description (English source)
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.