WordPress Button Plugin MaxButtons <= 9.7.4 - Authenticated (Administrator+) Stored Cross-Site Scripting

Vulnerability Description

The WordPress Button Plugin MaxButtons plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 9.7.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled. Administrators can give button creation privileges to users with lower levels (contributor+) which would allow those lower-privileged users to carry out attacks.

References

• https://www.wordfence.com/threat-intel/vulnerabilities/id/cfe2cabd-98f6-4ebc-8a02-e6951202aa88?source=cve
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3012872%40maxbuttons%2Ftrunk&old=2978023%40maxbuttons%2Ftrunk&sfp_email=&sfph_mail=