CVE-2026-19712
Masteriyo LMS < 2.3.3 - Instructor+ Stored XSS via Quiz Description
Description
The Masteriyo LMS WordPress plugin before 2.3.3 does not sanitise and escape a quiz field before outputting it back in a page, and grants its instructor role the ability to store unfiltered HTML, allowing such users to perform Stored Cross-Site Scripting attacks against any visitor of the affected page, including administrators. This affects default single-site installations. Sites running multisite, or defining DISALLOW_UNFILTERED_HTML, are not affected as the capability is not granted there.
INFO
Published Date :
Aug. 16, 2026, 6:16 a.m.
Last Modified :
Aug. 16, 2026, 6:16 a.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-19712
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update the Masteriyo LMS WordPress plugin to version 2.3.3 or later.
- Ensure the DISALLOW_UNFILTERED_HTML constant is defined if multisite is not used.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-19712.
| URL | Resource |
|---|---|
| https://wpscan.com/vulnerability/08c31101-ee38-46e9-b451-abb1ed70079c/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-19712 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-19712
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-19712 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-19712 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 16, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Unknown', 'product': 'Masteriyo LMS', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '2.3.3', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] Added Description The Masteriyo LMS WordPress plugin before 2.3.3 does not sanitise and escape a quiz field before outputting it back in a page, and grants its instructor role the ability to store unfiltered HTML, allowing such users to perform Stored Cross-Site Scripting attacks against any visitor of the affected page, including administrators. This affects default single-site installations. Sites running multisite, or defining DISALLOW_UNFILTERED_HTML, are not affected as the capability is not granted there. Added Reference https://wpscan.com/vulnerability/08c31101-ee38-46e9-b451-abb1ed70079c/