CVE-2026-82847CWE-79cross-site-scripting

CVE-2026-82847

Medium · published September 12, 2026

CVSS v3.1
6.8
EPSS
0%
Percentile
36.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00431 · 36.3th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-12T10:16Z
References (1)
https://wpscan.com/vulnerability/9cc4f7a7-e5b9-48fe-962b-f5d0753e6158/ · [email protected]
EPSS history
Timeline
  • 13 SEP 03:23Z
    EPSS moved — → 0%
    epss
  • 12 SEP 06:00Z
    Masteriyo LMS < 3.4.1 - Instructor+ Stored XSS via Course Highlights
    cvelistv5