CVE-2021-24621: WP Courses LMS < 2.0.44 - Authenticated Stored XSS via Video Embed Code

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-09-13 · updated 2026-06-17
Weakness: CWE-79

Description

The WP Courses LMS WordPress plugin before 2.0.44 does not sanitise its Video Embed Code, allowing malicious code to be injected in it by high privilege users, even when the unfiltered_html capability is disallowed, which could lead to Stored Cross-Site Scripting issues

Affected products

WP Courses LMS: before 2.0.44 — fixed in 2.0.44

How to fix

Upgrade to a fixed version: WP Courses LMS 2.0.44. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/bfbb32ac-9ef9-46de-8e5e-7d6d6fb868d8
https://wpscan.com/vulnerability/bfbb32ac-9ef9-46de-8e5e-7d6d6fb868d8

Get alerted when CVE-2021-24621 or the next vulnerability affects your stack