What’s Vulnerable › Vulnerabilities

CVE-2026-89333: Tutor LMS <= 4.0.8 - Insecure Direct Object Reference to Authenticated (Subscriber+) Sensitive Information Exposure via 'student_id' Parameter

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-19 · updated 2026-09-21
• Weakness: CWE-639

Description

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, 4.0.8 via the 'student_id' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to disclose the email address and Tutor profile phone number of arbitrary WordPress users, including Administrators, by iterating over user IDs via the student_id parameter.

Affected products

• themeum Tutor LMS – eLearning and online course solution: through 4.0.8

References

• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.8/classes/Template.php#L503
• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.8/classes/Utils.php#L2841
• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.8/templates/user-profile.php#L132
• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.8/templates/user-profile.php#L137
• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.8/templates/user-profile.php#L21
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3700174%40tutor&new=3700174%40tutor
• https://www.wordfence.com/threat-intel/vulnerabilities/id/244051ef-5357-4b16-b690-46c8fea56847?source=cve

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