Stored Cross-Site Scripting Vulnerability in Masteriyo LMS Plugin for WordPress
CVE-2026-19712
Currently unrated
Key Information:
- Vendor
WordPress
- Status
- Vendor
- CVE Published:
- 16 August 2026
Badges
👾 Exploit Exists🟡 Public PoC
What is CVE-2026-19712?
The Masteriyo LMS WordPress plugin prior to version 2.3.3 lacks proper sanitization and escaping of quiz fields, enabling instructor role users to store unfiltered HTML. This vulnerability could lead to Stored Cross-Site Scripting attacks, affecting all visitors, including administrators, of the impacted pages. Only standard single-site installations are susceptible, while multisite setups or those with DISALLOW_UNFILTERED_HTML defined remain unaffected.
Affected Version(s)
Masteriyo LMS 0 < 2.3.3
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.