A vulnerability has been discovered in the Whois Search plugin for WordPress, which can be exploited by malicious people to conduct cross-site scripting attacks.
Input passed to the "domain" parameter in index.php is not properly sanitised in wp-content/plugins/wordpress-whois-search/vendors/samswhois/samswhois.inc.php before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
Successful exploitation requires that the "WHOIS" widget is enabled.
The vulnerability is confirmed in version 18.104.22.168. Other versions may also be affected.
Solution: Update to version 22.214.171.124 which fixes a vector that does not require the widget to be enabled. Edit the source code to ensure that input is properly sanitised.
Provided and/or discovered by: Atmon3r
Additional information provided by Secunia Research.
Original Advisory: WordPress Whois Search:
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