CVE-2026-8599
Published: Tue, 09 Jun 2026 09:16
Summary
The MailerPress – Email Marketing, Newsletter, Email Automation & WooCommerce Emails plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Campaign HTML Content Field in all versions u
Details
The MailerPress – Email Marketing, Newsletter, Email Automation & WooCommerce Emails plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Campaign HTML Content Field in all versions up to, and including, 2.0.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The public-facing campaign preview endpoint (/mp-email/{id}-slug/) is not affected by this vulnerability, as it applies a Content-Security-Policy header blocking all inline scripts; exploitation is limited to the admin dashboard preview.
Are YOU affected by CVE-2026-8599?
5-second check on your actual server. Reads /etc/os-release, uname -r, and dpkg-query; matches against the live USN + Debian Security Tracker feeds; tells you whether CVE-2026-8599 (and any other live CVE) applies. Anonymous, no signup.
curl https://mindsparkstack.com/scan.sh | bash
References
- https://plugins.trac.wordpress.org/browser/mailerpress/tags/2.0.3/src/Actions/Shortcodes/CampaignEmail.php#L161
- https://plugins.trac.wordpress.org/browser/mailerpress/tags/2.0.3/src/Api/Campaigns.php#L2100
- https://plugins.trac.wordpress.org/browser/mailerpress/tags/2.0.3/src/Api/Campaigns.php#L2128
- https://plugins.trac.wordpress.org/browser/mailerpress/tags/2.0.3/src/Api/Campaigns.php#L2137
- https://plugins.trac.wordpress.org/browser/mailerpress/tags/2.0.5/src/Api/Campaigns.php#L2229
- https://plugins.trac.wordpress.org/browser/mailerpress/tags/2.0.5/src/Api/Campaigns.php#L4713
- https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Actions/Shortcodes/CampaignEmail.php#L161
- https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Api/Campaigns.php#L2100
- https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Api/Campaigns.php#L2128
- https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Api/Campaigns.php#L2137
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