CVE-2026-19712: Masteriyo LMS (WordPress plugin) · Cross-Site Scripting (XSS)
Affects Masteriyo LMS (WordPress plugin)Source CVE Database V5
Not known to be exploited · CVSS 6.1 Medium : upgrade to 2.3.3 when convenient.
Data as of 14 Nov 2026, 20:44 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 16% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 2.3.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 16 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 14 Nov 2026.
What to do
Upgrade Masteriyo LMS (WordPress plugin) to 2.3.3.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Masteriyo LMS | Affected
| Fixed in
|
AI-suggested
Users should upgrade to Masteriyo LMS version 2.3.3 or later once available. In the meantime, multisite installations or defining DISALLOW_UNFILTERED_HTML can mitigate the risk by removing the capability that allows unfiltered HTML storage by instructors.
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.