CVE-2026-19712

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.

CVSS v3.1

6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

0.18% chance of exploitation in the next 30 days, 8th percentile

Published

2026-08-16

Updated

2026-08-17

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/08c31101-ee38-46e9-b451-abb1ed70079c/

References

• CVE Record
• NVD entry

Related

• CVE-2026-19711
• CVE-2026-19714
• CVE-2026-19710
• CVE-2026-19715
• CVE-2026-1971
• CVE-2026-19717