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.
Metrics
Affected Vendors & Products
References
History
Mon, 17 Aug 2026 20:30:00 +0000
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| Metrics |
cvssV3_1
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Mon, 17 Aug 2026 10:45:00 +0000
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| First Time appeared |
Masteriyo
Masteriyo masteriyo Wordpress Wordpress wordpress |
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| Vendors & Products |
Masteriyo
Masteriyo masteriyo Wordpress Wordpress wordpress |
Sun, 16 Aug 2026 07:45:00 +0000
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| Weaknesses | CWE-79 |
Sun, 16 Aug 2026 06:15:00 +0000
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| 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. | |
| Title | Masteriyo LMS < 2.3.3 - Instructor+ Stored XSS via Quiz Description | |
| References |
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Status: PUBLISHED
Assigner: WPScan
Published: 2026-08-16T06:00:16.021Z
Updated: 2026-08-17T20:01:58.232Z
Reserved: 2026-08-13T11:05:28.685Z
Link: CVE-2026-19712
Updated: 2026-08-17T20:01:53.427Z
Status : Received
Published: 2026-08-16T06:16:52.207
Modified: 2026-08-17T20:16:42.020
Link: CVE-2026-19712
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