CVE-2026-13443mediumCWE-79

CVE-2026-13443: medium-severity vulnerability in themeum Tutor LMS – eLearning and online…

Tutor LMS <= 3.9.13 - Authenticated (Author+) Stored Cross-Site Scripting via Lesson Attachment Title

Published

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.4epss 0.4%
exploitation probability
0.4%top 71% of all CVEs
observed exploitation
nono source reports it
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:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Affected products
themeum · Tutor LMS – eLearning and online course solution
Related CVEs — themeum Tutor LMS – eLearning and online…

In the same product, most dangerous first.

CVE-2024-10400HIGHTutor LMS <= 2.7.6 - Unauthenticated SQL Injection via rating_filterEPSS 83.1%CVE-2024-1751HIGHTutor LMS – eLearning and online course solution <= 2.6.1 - Authenticated (Subscriber+) SQL InjectionEPSS 3.1%CVE-2026-78175HIGHTutor LMS <= 4.0.7 - Authenticated (Subscriber+) PHP Object Injection to Remote Code ExecutionEPSS 1.1%CVE-2026-16759MEDIUMTutor LMS <= 4.0.5 - Unauthenticated Remote Code Execution via 'template' and 'data' POST ParametersEPSS 0.7%CVE-2026-3360HIGHTutor LMS <= 3.9.7 - Missing Authorization to Unauthenticated Arbitrary Billing Profile Overwrite via 'order_id' ParameterEPSS 0.6%CVE-2024-10393MEDIUMTutor LMS <= 2.7.6 - User Registration Setting Bypass to Unauthorized User RegistrationEPSS 0.6%
References
https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/classes/Utils.php#L1688https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/classes/Utils.php#L1720https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/templates/global/attachments.php#L34https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Utils.php#L1688https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Utils.php#L1720https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/templates/global/attachments.php#L34https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3590029%40tutor&new=3590029%40tutor&sfp_email=&sfph_mail=https://www.wordfence.com/threat-intel/vulnerabilities/id/7483762c-5356-4844-90a9-511d9ec48625?source=cve