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CVE-2026-8599 Details

UNDERGOING ENRICHMENT

The CVE is currently being enriched by the Volerion team. The enrichment process results in the association of reference link tags, CVSS, and CPE applicability statement data.

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:…Vector:This vulnerability is currently being analyzed.

CNA: [email protected]CVSS-B:6.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://plugins.trac.wordpress.org/browser/mailerpress/tags/2.0.3/src/Actions/Shortcodes/CampaignEmail.php#L161	[email protected]
https://plugins.trac.wordpress.org/browser/mailerpress/tags/2.0.3/src/Api/Campaigns.php#L2100	[email protected]
https://plugins.trac.wordpress.org/browser/mailerpress/tags/2.0.3/src/Api/Campaigns.php#L2128	[email protected]
https://plugins.trac.wordpress.org/browser/mailerpress/tags/2.0.3/src/Api/Campaigns.php#L2137	[email protected]
https://plugins.trac.wordpress.org/browser/mailerpress/tags/2.0.5/src/Api/Campaigns.php#L2229	[email protected]
https://plugins.trac.wordpress.org/browser/mailerpress/tags/2.0.5/src/Api/Campaigns.php#L4713	[email protected]
https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Actions/Shortcodes/CampaignEmail.php#L161	[email protected]
https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Api/Campaigns.php#L2100	[email protected]
https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Api/Campaigns.php#L2128	[email protected]
https://plugins.trac.wordpress.org/browser/mailerpress/trunk/src/Api/Campaigns.php#L2137	[email protected]
https://www.wordfence.com/threat-intel/vulnerabilities/id/c52cadb2-703f-4aad-85f2-aec1dd4befdc?source=cve	[email protected]

see all 11 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

This vulnerability is currently being analyzed

Change History

4 change records found show changes

Date	Action	Recorded By
Jul 23, 2026	CVE Translated	[email protected]
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 9, 2026	New CVE Received	[email protected]