Synopsis
A researcher at Tenable discovered a Cross-Site Scripting (XSS) vulnerability in the WordPress RSS Aggregator plugin.
The XSS exists because of a lack of sanitization of the 'notice_id' GET parameter.
Proof Of Concept:
The vulnerability can be reproduced by performing the following GET HTTP request against a WordPress instance using a vulnerable version of the plugin and noticing the client-side JavaScript execution :
curl 'http://WORDPRESS/wp-admin/admin-ajax.php?action=wprss_admin_notice_hide¬ice_id=<svg/onload=alert`1`>' -H 'Cookie: [subscriber cookie]'Solution
The issue was fixed in WordPress RSS Aggregator Plugin version 4.23.9
Additional References
https://www.wprssaggregator.com/https://fr.wordpress.org/plugins/wp-rss-aggregator/#developers
Disclosure Timeline
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