Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/classes/Utils.php#L
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/classes/Utils.php#L
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/templates/global/at
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Utils.php#L1
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Utils.php#L1
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/templates/global/att
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7483762c-5356-4844-90a
FAQ
What is CVE-2026-13443?
CVE-2026-13443 is a vulnerability with a CVSS score of 6.4 (MEDIUM). 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 i...
How severe is CVE-2026-13443?
CVE-2026-13443 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-13443?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.