# Masteriyo vulnerabilities

Source: https://junglewise.ai/threats/vendors/masteriyo  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/masteriyo.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 11 vulnerabilities in Masteriyo: 0 in the last 7 days and 8 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-82850, was published on 24 September 2026. Nothing in the last four weeks, down from 2 vulnerabilities in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 8
- All time: 11 (1 critical, 0 exploited in the wild)

## About Masteriyo

Learning management system for creating and managing online courses.

## Latest Masteriyo vulnerabilities

- [CVE-2026-82850: Masteriyo LMS WordPress plugin sensitive data disclosure in quiz answer keys](https://junglewise.ai/threats/cve-2026-82850-the-masteriyo-lms-wordpress-plugin-before-3-4-2-does-not-restrict) (medium, CVSS 4.3, published 24 Sep 2026)
- [CVE-2026-82849: Masteriyo LMS WordPress plugin insecure direct object reference in course progress](https://junglewise.ai/threats/cve-2026-82849-the-masteriyo-lms-wordpress-plugin-before-3-4-2-does-not-verify) (medium, CVSS 4.3, published 24 Sep 2026)
- [CVE-2026-82851: Masteriyo LMS arbitrary post disclosure via IDOR](https://junglewise.ai/threats/cve-2026-82851-masteriyo-lms-arbitrary-post-disclosure-via-idor) (low, CVSS 2.7, published 12 Sep 2026)
- [CVE-2026-82847: Masteriyo LMS stored XSS in course highlights field](https://junglewise.ai/threats/cve-2026-82847-masteriyo-lms-stored-xss-in-course-highlights-field) (medium, CVSS 6.8, published 12 Sep 2026)
- [CVE-2026-82845: Masteriyo LMS PHP object injection in metadata deserialization](https://junglewise.ai/threats/cve-2026-82845-masteriyo-lms-php-object-injection-in-metadata-deserialization) (critical, CVSS 9.9, published 12 Sep 2026)
- [CVE-2026-82848: Masteriyo LMS authorization bypass in REST API course enrollment endpoint](https://junglewise.ai/threats/cve-2026-82848-masteriyo-lms-authorization-bypass-in-rest-api-course-enrollment) (medium, CVSS 5.3, published 9 Sep 2026)
- [CVE-2026-8279: Masteriyo LMS authorization bypass in course progress deletion](https://junglewise.ai/threats/cve-2026-8279-masteriyo-lms-authorization-bypass-in-course-progress-deletion) (medium, CVSS 5.3, published 7 Sep 2026)
- [CVE-2026-82846: Masteriyo LMS stored cross-site scripting in course custom fields](https://junglewise.ai/threats/cve-2026-82846-masteriyo-lms-stored-cross-site-scripting-in-course-custom-fields) (medium, CVSS 6.8, published 5 Sep 2026)
- [CVE-2026-13332: Masteriyo LMS unauthenticated session termination in AJAX action](https://junglewise.ai/threats/cve-2026-13332-masteriyo-lms-unauthenticated-session-termination-in-ajax-action) (info, CVSS 3.7, published 27 Jul 2026)
- [CVE-2026-59513: Masteriyo LMS Subscriber Cross Site Scripting](https://junglewise.ai/threats/cve-2026-59513-masteriyo-lms-subscriber-cross-site-scripting) (medium, CVSS 6.5, published 23 Jul 2026)
- [CVE-2026-10824: Masteriyo LMS authorization bypass in course-progress REST API](https://junglewise.ai/threats/cve-2026-10824-masteriyo-lms-authorization-bypass-in-course-progress-rest-api) (info, CVSS 6.5, published 25 Jun 2026)

## Most severe Masteriyo vulnerabilities

- [CVE-2026-82845: Masteriyo LMS PHP object injection in metadata deserialization](https://junglewise.ai/threats/cve-2026-82845-masteriyo-lms-php-object-injection-in-metadata-deserialization) (critical, CVSS 9.9, published 12 Sep 2026)
- [CVE-2026-82847: Masteriyo LMS stored XSS in course highlights field](https://junglewise.ai/threats/cve-2026-82847-masteriyo-lms-stored-xss-in-course-highlights-field) (medium, CVSS 6.8, published 12 Sep 2026)
- [CVE-2026-82846: Masteriyo LMS stored cross-site scripting in course custom fields](https://junglewise.ai/threats/cve-2026-82846-masteriyo-lms-stored-cross-site-scripting-in-course-custom-fields) (medium, CVSS 6.8, published 5 Sep 2026)
- [CVE-2026-59513: Masteriyo LMS Subscriber Cross Site Scripting](https://junglewise.ai/threats/cve-2026-59513-masteriyo-lms-subscriber-cross-site-scripting) (medium, CVSS 6.5, published 23 Jul 2026)
- [CVE-2026-8279: Masteriyo LMS authorization bypass in course progress deletion](https://junglewise.ai/threats/cve-2026-8279-masteriyo-lms-authorization-bypass-in-course-progress-deletion) (medium, CVSS 5.3, published 7 Sep 2026)
- [CVE-2026-82848: Masteriyo LMS authorization bypass in REST API course enrollment endpoint](https://junglewise.ai/threats/cve-2026-82848-masteriyo-lms-authorization-bypass-in-rest-api-course-enrollment) (medium, CVSS 5.3, published 9 Sep 2026)
- [CVE-2026-82850: Masteriyo LMS WordPress plugin sensitive data disclosure in quiz answer keys](https://junglewise.ai/threats/cve-2026-82850-the-masteriyo-lms-wordpress-plugin-before-3-4-2-does-not-restrict) (medium, CVSS 4.3, published 24 Sep 2026)
- [CVE-2026-82849: Masteriyo LMS WordPress plugin insecure direct object reference in course progress](https://junglewise.ai/threats/cve-2026-82849-the-masteriyo-lms-wordpress-plugin-before-3-4-2-does-not-verify) (medium, CVSS 4.3, published 24 Sep 2026)
- [CVE-2026-82851: Masteriyo LMS arbitrary post disclosure via IDOR](https://junglewise.ai/threats/cve-2026-82851-masteriyo-lms-arbitrary-post-disclosure-via-idor) (low, CVSS 2.7, published 12 Sep 2026)
- [CVE-2026-10824: Masteriyo LMS authorization bypass in course-progress REST API](https://junglewise.ai/threats/cve-2026-10824-masteriyo-lms-authorization-bypass-in-course-progress-rest-api) (info, CVSS 6.5, published 25 Jun 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 2 vulnerabilities in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 1 | 0 | 0 |
| 7 Sep 2026 | 5 | 1 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 2 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Masteriyo vulnerabilities", https://junglewise.ai/threats/vendors/masteriyo, 9 November 2026.