Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Unknown Masteriyo LMS — Masteriyo LMS < 2.3.3 - Instructor+ Stored XSS via Quiz Description
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N R C L L N 6.1 .0018 8.0 —
AFFECTED
Product Versions Fixed
Masteriyo LMS unspecified —
TIMELINE
Aug 13 Reserved by WPScan
Aug 15 EXPLOIT PUBLISHED — CVE-2026-19712 (Unknown Masteriyo LMS). Public exploit reference added.
Aug 16 Published (CNA: WPScan)
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| August 13, 2026 | Reserved | Reserved by WPScan |
| August 15, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-19712 (Unknown Masteriyo LMS). Public exploit reference added. |
| August 16, 2026 | Published | Published (CNA: WPScan) |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Unknown | Masteriyo LMS | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-19712 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.