Vulnerabilities / MailPoet – Newsletters, Email Marketing, and Automation / WPSEC-2026-0256
MailPoet – Newsletters, Email Marketing, and Automation <= 5.39.0 - Unauthenticated Sensitive Information Exposure of Password-Protected Post Content via Newsletters
Low 3.7
CWE-200Fixed in 5.40.0
- ID
- WPSEC-2026-0256
- Plugin
- MailPoet – Newsletters, Email Marketing, and Automation (mailpoet)
- Affected
- all versions before 5.40.0
- Remediation
- Update to 5.40.0 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weakness
- CWE-200
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-22
- Attack surface
- MailPoet – Newsletters, Email Marketing, and Automation on WPSec AttackSurface
- Fix released
- Published
Description
The MailPoet plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 5.39.0 due to the plugin including the body and excerpt of password-protected posts and products in newsletters, post notifications, and Automated Latest Content, Posts, and Products blocks. This makes it possible for unauthenticated attackers who subscribe to a site's mailing list to receive the content of password-protected posts without knowing the password, when the site sends emails that include such posts.
References
- https://wpsec.com/vuln/WPSEC-2026-0256/
- https://plugins.svn.wordpress.org/mailpoet/tags/5.40.0/
- https://wordpress.org/plugins/mailpoet/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
This advisory as JSON or Markdown · All advisories: JSON, RSS