Vulnerability · Published Jul 1, 2026 · Assigned by Wordfence
CVE-2026-13443Tutor LMS <= 3.9.13 - Authenticated (Author+) Stored Cross-Site Scripting via Lesson Attachment Title
Medium 6.4
In plain English
A medium-severity cross-site scripting in Tutor LMS – eLearning and online course solution from themeum. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| themeum | Tutor LMS – eLearning and online course solution | 0 – through 3.9.13 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7483762c-5356-4844-90a9-511d9ec48625?source=cve
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/templates/global/attachments.php#L34
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/classes/Utils.php#L1720
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/classes/Utils.php#L1688
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/templates/global/attachments.php#L34
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Utils.php#L1720
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Utils.php#L1688
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3590029%40tutor&new=3590029%40tutor&sfp_email=&sfph_mail=