Is CVE-2026-8279 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-8279 being exploited in the wild.

How severe is CVE-2026-8279?

Medium severity, with a CVSS score of 5.3, published 7 September 2026.

Which products and versions are affected?

Masteriyo Masteriyo LMS up to and including 2.2.0.

Is there a fix for CVE-2026-8279?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-8279 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-8279?

Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-8279: Masteriyo LMS authorization bypass in course progress deletion

CVE-2026-8279 · Severity: medium · CVSS 5.3 · Published 2026-09-07

Masteriyo LMS is a WordPress plugin for managing online courses and student learning. The plugin fails to properly verify user permissions when deleting course progress records, allowing unauthenticated attackers to delete any student's progress data. This could disrupt course tracking, student grades, and learning outcomes without detection or authorization.

Quick answers

Is CVE-2026-8279 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-8279 being exploited in the wild.
How severe is CVE-2026-8279?: Medium severity, with a CVSS score of 5.3, published 7 September 2026.
Which products and versions are affected?: Masteriyo Masteriyo LMS up to and including 2.2.0.
Is there a fix for CVE-2026-8279?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-8279 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-8279?: Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an authorization bypass (missing capability check) in the CourseProgressItemsController's delete_item_permissions_check function. Unauthenticated attackers can directly call the deletion endpoint to remove arbitrary course progress records via the REST API, without requiring authentication or admin privileges. The vulnerability affects the plugin through version 2.2.0. The root cause is insufficient permission validation before executing destructive operations on student progress data. An attacker needs only network access to the WordPress site and can arbitrarily target and delete course progress belonging to any student.

Affected products

Masteriyo Masteriyo LMS up to and including 2.2.0

Timeline

2026-09-07: disclosed

References

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