WordPress Plugin Vulnerabilities
WP Downgrade < 1.2.3 - Admin+ Stored Cross-Site Scripting
Description
The plugin only perform client side validation of its "WordPress Target Version" settings, but does not sanitise and escape it server side, allowing high privilege users such as admin to perform Cross-Site attacks even when the unfiltered_html capability is disallowed
Proof of Concept
Access the settings of the plugin (/wp-admin/options-general.php?page=wp_downgrade) and remove the max length as well as pattern attribute on the "WordPress Target Version" settings field, then put the following payload in it and save: <script>alert(/XSS/)</script>
Affects Plugins
Fixed in 1.2.3 References
Classification
Type
XSS
OWASP top 10
CWE
CVSS
Miscellaneous
Original Researcher
Taurus Omar
Submitter
Taurus Omar
Submitter website
Submitter twitter
Verified
Yes
WPVDB ID
Timeline
Publicly Published
2022-03-22 (about 2 years ago)
Added
2022-03-22 (about 2 years ago)
Last Updated
2022-04-11 (about 2 years ago)
WPScan 