CVE-2026-88944 json
Tutor LMS <= 4.0.8 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Post Deletion via 'lesson_id' Parameter
published 2026-09-19 51 d ago modified 2026-09-21 48 d ago also EUVD-2026-83474
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 40%
- public exploits
- 0
- none known
Summary
The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.0.8. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to permanently delete arbitrary WordPress posts — including pages, courses, quizzes, and WooCommerce products — via wp_delete_post( $id, true ). The exploit chain requires the attacker to first trigger the profile-photo upload flow to obtain an authored wp_posts attachment row, then create a Tutor topic reparented to that attachment, before invoking the lesson deletion handler against any target post ID.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 50 d ago
Exploit prediction
0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Affected products
- themeum Tutor LMS – eLearning and online course solution
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/7e23fcd0-62b4-460d-9b64-8adbf14bf820?source=cve
- plugins.trac.wordpress.org /browser/tutor/tags/4.0.7/classes/Utils.php#L7481
- plugins.trac.wordpress.org /browser/tutor/tags/4.0.7/classes/Utils.php#L3277
- plugins.trac.wordpress.org /browser/tutor/tags/4.0.7/classes/Course.php#L1758
- plugins.trac.wordpress.org /browser/tutor/tags/4.0.7/classes/Lesson.php#L541
- plugins.trac.wordpress.org /browser/tutor/tags/4.0.7/classes/Utils.php#L7666
- plugins.trac.wordpress.org /browser/tutor/tags/4.0.7/classes/Course.php#L2055
- plugins.trac.wordpress.org /browser/tutor/tags/4.0.7/classes/User.php#L395
- plugins.trac.wordpress.org /changeset?reponame=&old=3700174%40tutor&new=3700174%40tutor
Sources
- CVE List CVE-2026-88944
- NVD CVE-2026-88944
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.