# MailerPress – Email Marketing, Newsletter, Email Automation & WooCommerce Emails <= 2.1.3 - Unauthenticated Sensitive Information Exposure via Subscriber Page Preview Mode

- **ID:** WPSEC-2026-1709
- **Plugin:** MailerPress – Email Marketing, Newsletter, Email Automation & WooCommerce Emails (`mailerpress`), https://wordpress.org/plugins/mailerpress/
- **Affected versions:** all versions before 2.2
- **Fixed in:** 2.2 (Update to 2.2 or later.)
- **Severity:** Medium 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
- **Weakness:** CWE-200
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-10-27)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/mailerpress
- **Fix released:** 2026-10-26
- **Published:** 2026-10-27
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1709/

## Description

The MailerPress – Email Marketing, Newsletter, Email Automation & WooCommerce Emails plugin for WordPress is vulnerable to Sensitive Information Exposure via the preview mode of the [mailerpress_pages] subscriber pages in all versions up to, and including, 2.1.3, due to the preview mode being enabled by a URL parameter such as 'mp_preview' with no authentication or capability check. This makes it possible for unauthenticated attackers to view the site administrator's email address and first and last name on the 'Manage subscription' page.

## References

- https://wpsec.com/vuln/WPSEC-2026-1709/
- https://plugins.svn.wordpress.org/mailerpress/tags/2.2/
- https://wordpress.org/plugins/mailerpress/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1709/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.