CVE-2026-8599MailerPress <= 2.0.4 - Authenticated (Author+) Stored Cross-Site Scripting via Campaign HTML Content Field
Updated under an hour ago ()
Does this affect you?
It affects MailerPress – Email Marketing, Newsletter, Email Automation & WooCommerce Emails. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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.
- CVSS
- 6.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Jun 9, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
mailerpress MailerPress – Email Marketing, Newsletter, Email Automation & WooCommerce Emails mailerpress:email_marketing_newsletter_email_automation_and_woocommerce_emails (from the name) | through 2.0.4 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c52cadb2-703f-4aad-85f2-aec1dd4befdc?source=cve
- 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#L2100
- https://plugins.trac.wordpress.org/browser/mailerpress/tags/2.0.3/src/Api/Campaigns.php#L2137
- https://plugins.trac.wordpress.org/browser/mailerpress/tags/2.0.3/src/Actions/Shortcodes/CampaignEmail.php#L161
- 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#L2100
- https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Api/Campaigns.php#L2137
- https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Actions/Shortcodes/CampaignEmail.php#L161
- https://plugins.trac.wordpress.org/browser/mailerpress/tags/2.0.5/src/Api/Campaigns.php#L4713
- https://plugins.trac.wordpress.org/browser/mailerpress/tags/2.0.5/src/Api/Campaigns.php#L2229
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.