CVE-2026-88944: Auth Bypass (CVSS 4.3)

Description

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.

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS — Exploit Prediction

0.0046

Probability of exploitation

0.38%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-862 Missing Authorization

References

Other References

https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.7/classes/Course.php#L1758 https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.7/classes/Course.php#L2055 https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.7/classes/Lesson.php#L541 https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.7/classes/User.php#L395 https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.7/classes/Utils.php#L3277 https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.7/classes/Utils.php#L7481 https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.7/classes/Utils.php#L7666 https://plugins.trac.wordpress.org/changeset?reponame=&old=3700174%40tutor&new=3700174%40tutor https://www.wordfence.com/threat-intel/vulnerabilities/id/7e23fcd0-62b4-460d-9b64-8adbf14bf820?source=cve

Frequently Asked Questions

What is CVE-2026-88944? +

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. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-88944? +

CVE-2026-88944 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0046, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-88944? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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