The Theme and plugin translation for Polylang is vulnerable to authorization bypass in versions up to, and including, 3.2.16 due to missing capability checks in the process_polylang_theme_translation_wp_loaded() function. This makes it possible for unauthenticated attackers to update plugin and theme translation settings and to import translation strings.

Cross-site scripting (XSS) vulnerability in the Polylang plugin before 1.5.2 for WordPress allows remote attackers to inject arbitrary web script or HTML via vectors related to a user description. NOTE: some of these details are obtained from third party information.