
Mailster Kickbox Security & Risk Analysis
wordpress.org/plugins/mailster-kickbox-ioVerifies your subscribers email addresses with kickbox.com
Is Mailster Kickbox Safe to Use in 2026?
Generally Safe
Score 92/100Mailster Kickbox has no known CVEs and is actively maintained. It's a solid choice for most WordPress installations.
The mailster-kickbox.io plugin version 1.2.0 exhibits a generally strong security posture based on the provided static analysis. The absence of direct SQL queries without prepared statements, the high percentage of properly escaped output, and the lack of dangerous functions are positive indicators. Furthermore, the plugin has no recorded vulnerabilities (CVEs), which suggests a history of secure development and maintenance. However, there are notable areas for improvement. The complete lack of nonce checks and capability checks across all identified entry points (even though the attack surface appears minimal with zero entry points listed) is a significant concern. This omission could potentially leave the plugin vulnerable to CSRF attacks or unauthorized actions if any new entry points are introduced or if the current analysis is incomplete. The single external HTTP request, while not inherently risky, warrants scrutiny to ensure it doesn't expose sensitive information or introduce other attack vectors.
Key Concerns
- No nonce checks
- No capability checks
- External HTTP requests
Mailster Kickbox Security Vulnerabilities
Mailster Kickbox Release Timeline
Mailster Kickbox Code Analysis
Output Escaping
Mailster Kickbox Attack Surface
WordPress Hooks 5
Maintenance & Trust
Mailster Kickbox Maintenance & Trust
Maintenance Signals
Community Trust
Mailster Kickbox Alternatives
Mailster SendGrid Integration
mailster-sendgrid
Uses SendGrid to deliver emails for the Mailster Newsletter Plugin for WordPress.
Mailster Gravity Forms
mailster-gravity-forms
Integrates Mailster Newsletter Plugin with Gravity Forms to subscribe users with a Gravity Form.
Mailster Live
mailster-live
See who opens your newsletter campaigns in real time.
Mailster Multi SMTP
mailster-multi-smtp
Allows to use multiple SMTP connection for the Mailster Newsletter Plugin
Mailster DummyMailer
mailster-dummy-mailer
A Dummy Mailer for the Mailster Newsletter Plugin for WordPress. Requires at least version 3 of the Mailster Plugin
Mailster Kickbox Developer Profile
28 plugins · 120K total installs
How We Detect Mailster Kickbox
Patterns used to identify this plugin on WordPress sites during automated security audits and web crawling.
Asset Fingerprints
/wp-content/plugins/mailster-kickbox-io/assets/css/backend.css/wp-content/plugins/mailster-kickbox-io/assets/js/backend.js/wp-content/plugins/mailster-kickbox-io/assets/js/backend.jsmailster-kickbox-io/assets/css/backend.css?ver=mailster-kickbox-io/assets/js/backend.js?ver=HTML / DOM Fingerprints
mailster-kickbox-settings-containerdata-kickbox-api-keydata-mailster-kickbox-activemailster_kickbox_activemailster_kickbox_api_key