Masteriyo LMS < 2.3.3 - Instructor+ Stored XSS via Quiz Description
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 6.1epss 0.2%
exploitation probability
0.2%top 92% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Affected products
Unknown · Masteriyo LMSpublic PoCs found — 1
cve_referencewpscan.com/vulnerability/08c31101-ee38-46e9-b451-abb1ed70079c/unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.