Shortcodes and extra features for Phlox theme <= 2.15.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'aux_timeline' Shortcode

Vulnerability Description

The Shortcodes and extra features for Phlox theme plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's aux_timeline shortcode in all versions up to, and including, 2.15.7 due to insufficient input sanitization and output escaping on user supplied attributes such as thumb_mode and date_type. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

References

• https://www.wordfence.com/threat-intel/vulnerabilities/id/fe175315-99ef-438a-b5b0-a5f190403116?source=cve
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3074455%40auxin-elements&new=3074455%40auxin-elements&sfp_email=&sfph_mail=#file8