The WordPress IgniteUp/Coming Soon and Maintenance Mode plugin, which has 30,000+ active installations, was prone to multiple vulnerabilities in version 3.4 and below that could lead to arbitrary file deletion, stored XSS, information disclosure, HTML injection in email and CSRF, among a few other issues.

Multiple plugins offering to convert WordPress’ default plain text emails to HTML format were found to be vulnerable to HTML injection, which could lead to phishing or CSRF attacks.

The WordPress CformsII plugin (10,000+ active installations) was prone to an HTML injection vulnerability that could be used to target the administrator.

The WordPress ND Shortcodes For Visual Composer plugin (10,000+ active installations), was prone to a critical privilege escalation vulnerability.

The WordPress Pirate Forms plugin (200,000+ active installations) was prone to an HTML injection vulnerability that could be used to target the administrator.

The WordPress Coming Soon Page and Maintenance Mode (7,000+ active installations), was prone to unauthenticated stored XSS and settings reset vulnerabilities in version 1.7.8 and below.

The WordPress Ocean Extra plugin, which has over 400,000 active installations, was prone to settings change and CSS injection vulnerabilities in version 1.5.8 and below.