Stored cross-site scripting in Tutor LMS via display_name parameter
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
Tutor LMS, a WordPress eLearning plugin, is affected in all versions up to and including 4.1.0. Missing input sanitization and output escaping of the display_name parameter allow stored cross-site scripting (CWE-79). An authenticated attacker with subscriber-level access or above can inject scripts that run whenever a user opens an affected page, and the attack requires a Legal Consent record to exist for the attacker's account.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Stored Cross-Site Scripting via display_name Parameter in all versions up to, and including, 4.1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires that a Legal Consent record exists for the attacker's user account, causing the View Logs button to appear in the wp-admin/users.php Consent Logs column.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for Tutor LMS.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-16 Threatist record created from CVE-2026-93681
- 2026-10-16 Alias added: GHSA-633x-59jf-x243
References
Other 6
- https://www.wordfence.com/threat-intel/vulnerabilities/id/3ff5cff8-ecca-4cde-b3f6-09ee49afea25?source=cve
- https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.9/assets/js/tutor-admin.js#L21
- https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.9/classes/Student.php#L208
- https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.9/classes/Student.php#L217
- https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.9/GDPR/Controllers/UserConsent.php#L113
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3730615%40tutor&new=3730615%40tutor
More themeum vulnerabilities
- TI-2024-09629 Tutor LMS <= 2.7.6 - Unauthenticated SQL Injection via rating_filter CVSS 3.1HIGH 7.5
- TI-2023-02936 Tutor LMS < 2.2.1 - Unauthenticated Access to Tutor LMS Lesson Resources via REST API CVSS 3.1HIGH 7.5
- TI-2021-07196 Qubely < 1.8.6 - Unauthenticated Arbitrary E-mail Sending CVSS 3.1HIGH 7.5
- TI-2023-05666 WP Crowdfunding < 2.1.9 - Reflected XSS CVSS 3.1MEDIUM 6.1
- TI-2023-00225 Tutor LMS < 2.0.10 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1
- TI-2023-04422 Tutor LMS < 2.3.0 - Subscriber+ Stored Cross-Site Scripting CVSS 3.1MEDIUM 5.4
Sources
- CVE-2026-93681 · CVE Program
- CVE-2026-93681 · NVD
- FIRST EPSS
- GHSA-633x-59jf-x243 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences