The Easy SVG Support plugin for WordPress is vulnerable to Stored Cross-Site Scripting via REST API SVG File uploads in all versions up to, and including, 3.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the SVG file.

The Easy SVG Allow WordPress plugin through 1.0 does not sanitize uploaded SVG files, which could allow users with a role as low as Author to upload a malicious SVG containing XSS payloads.