012 PS Multi Languages <= 1.6 - Authenticated (Contributor+) Stored Cross-Site Scripting

The 012 Ps Multi Languages plugin for WordPress is vulnerable to Stored Cross-Site Scripting via translated titles in all versions up to, and including, 1.6 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.