CVE-2026-93779

CVSS 6.5 (medium) · published 2026-11-07

The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.1.2 via the init_routes due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to read paid course lesson and topic content without enrollment, retrieve quiz answer keys including the is_correct field before attempting a quiz, and enumerate the email addresses, usernames, and registration data of other users including instructors and administrators. Exploitation requires that the attacker hold a valid Tutor LMS API key/secret pair, which is issued to subscriber-level users through the plugin's API key management feature.

Weakness: CWE-639

Source: NVD CVE-2026-93779

References

• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.9/classes/RestAPI.php#L135
• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.9/classes/RestAPI.php#L376
• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.9/classes/RestAPI.php#L418
• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.9/classes/RestAPI.php#L460
• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.9/restapi/REST_Author.php#L43
• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.9/restapi/REST_Course.php#L303
• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.9/restapi/REST_Quiz.php#L209
• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.9/restapi/RestAuth.php#L331
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3748228%40tutor&new=3748228%40tutor
• https://www.wordfence.com/threat-intel/vulnerabilities/id/b0c8b586-784e-43a4-8bb8-c7cb771476a4?source=cve

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