CVE-2026-82847Masteriyo LMS < 3.4.1 - Instructor+ Stored XSS via Course Highlights
Updated under an hour ago ()
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It affects Unknown Masteriyo LMS. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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The Masteriyo LMS WordPress plugin before 3.4.1 does not sanitise and escape one of its course fields before outputting it back in the course editor, allowing users with the instructor role to perform Stored Cross-Site Scripting attacks against higher privileged users such as administrators.
- CVSS
- 6.8 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- WPScan
- NVD analysis
- Deferred
- Record last updated
- Sep 12, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Unknown Masteriyo LMS unknown:masteriyo_lms (from the name) | before 3.4.1 | CNA record |
References
- https://wpscan.com/vulnerability/9cc4f7a7-e5b9-48fe-962b-f5d0753e6158/exploit, vdb-entry, technical-description
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.