WordPress Plugin Vulnerabilities
WP Courses LMS < 2.0.44 - Authenticated Stored XSS via Video Embed Code
Description
The plugin 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
Proof of Concept
1. On the dashboard, navigate to WP Courses > Courses > Add New > Video Embed Code (iframe) (in the Post settings), inject with <iframe> XSS payload, such as <iframe src="javascript:alert(document.cookie)"></iframe>; <iframe src="javascript:%61%6c%65%72%74%28%64%6f%63%75%6d%65%6e%74%2e%63%6f%6f%6b%69%65%29"></iframe> 2. Click Update, and to trigger XSS payload, open URL path of course
Affects Plugins
Fixed in 2.0.44 References
CVE
Classification
Type
XSS
OWASP top 10
CWE
CVSS
Miscellaneous
Original Researcher
Tri Wanda Septian
Submitter
Tri Wanda Septian
Submitter website
Submitter twitter
Verified
Yes
WPVDB ID
Timeline
Publicly Published
2021-08-16 (about 2 years ago)
Added
2021-08-16 (about 2 years ago)
Last Updated
2022-04-08 (about 2 years ago)
WPScan 