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Medium severity · published Sep 19, 2026
CVE-2026-89333
Tutor LMS <= 4.0.8 - Insecure Direct Object Reference to Authenticated (Subscriber+) Sensitive Information Exposure via 'student_id' Parameter
6.5
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TL
Tutor LMS – eLearning and online course solution · themeum
through 4.0.8 · source: vendor
Affected product
TL
Tutor LMS – eLearning and online course solution
themeum
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89333
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-89333
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.8/classes/Template.php#L503
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.8/classes/Utils.php#L2841
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.8/templates/user-profile.php#L132
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.8/templates/user-profile.php#L137
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.8/templates/user-profile.php#L21
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset?reponame=&old=3700174%40tutor&new=3700174%40tutor
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