WP-CommentNavi <= 1.12.1 is vulnerable to Cross Site Scripting (XSS)

The WP-CommentNavi plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the navi options 'pages_text', 'current_text', 'page_text', 'first_text', 'last_text', 'next_text', 'prev_text', 'dotright_text', and 'num_pages', in versions up to, and including, 1.12.1 due to insufficient input sanitization and output escaping. This makes it possible for administrator-level attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.