Vulnerabilities / MailMunch – Grow your Email List / WPSEC-2026-0827
MailMunch – Grow your Email List <= 3.1.2 - Authenticated (Subscriber+) Missing Authorization to Account Linking and Widget/Email Management via AJAX Actions
Medium 5.4
CWE-862Fixed in 3.2.2
- ID
- WPSEC-2026-0827
- Plugin
- MailMunch – Grow your Email List (mailmunch)
- Affected
- all versions before 3.2.2
- Remediation
- Update to 3.2.2 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
- Weakness
- CWE-862
- Usage
- Plugin Low · Affected versions None seen among sites WPSec scans, 2026-10-13
- Attack surface
- MailMunch – Grow your Email List on WPSec AttackSurface
- Fix released
- Published
Description
The MailMunch – Grow your Email List plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the sign_up, sign_in, delete_widget, change_email_status and delete_email AJAX actions in all versions up to, and including, 3.1.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to point the site's MailMunch site ID at an attacker-controlled MailMunch account, which changes the forms loaded on the site's front end, and to delete widgets, delete emails or change email status on the site's linked MailMunch account.
References
- https://wpsec.com/vuln/WPSEC-2026-0827/
- https://plugins.svn.wordpress.org/mailmunch/tags/3.2.2/
- https://wordpress.org/plugins/mailmunch/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
This advisory as JSON or Markdown · All advisories: JSON, RSS