CVE-2024-0621: Simplesharebuttons Simple Share Buttons Adder

Medium severity, CVSS 4.8. EPSS: 0.5% chance of exploitation in the next 30 days.

The Simple Share Buttons Adder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 8.4.11 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.

Affected products

Published 2024-02-29. Last modified 2026-06-17.