WordPress Plugin Vulnerabilities
Simple Download Monitor < 3.9.5 - Contributor+ Stored Cross-Site Scripting via File Thumbnail
Description
The plugin does not escape the "File Thumbnail" post meta before outputting it in some pages, which could allow users with a role as low as Contributor to perform Stored Cross-Site Scripting attacks. Given the that XSS is triggered even when the Download is in a review state, contributor could make JavaScript code execute in a context of a reviewer such as admin and make them create a rogue admin account, or install a malicious plugin
Proof of Concept
Add new download Set "File Thumbnail (Optional)" to " onerror=alert(origin)// Publish or Submit for Review (depending on role). XSS will be triggered in the Downloads List and when editing the download
Affects Plugins
Fixed in 3.9.5 References
CVE
Classification
Type
XSS
OWASP top 10
CWE
CVSS
Miscellaneous
Original Researcher
apple502j
Submitter
apple502j
Verified
Yes
WPVDB ID
Timeline
Publicly Published
2021-10-05 (about 2 years ago)
Added
2021-10-05 (about 2 years ago)
Last Updated
2022-04-15 (about 2 years ago)
WPScan 