# MailMunch – Grow your Email List <= 3.1.2 - Authenticated (Subscriber+) Missing Authorization to Account Linking and Widget/Email Management via AJAX Actions

- **ID:** WPSEC-2026-0827
- **Plugin:** MailMunch – Grow your Email List (`mailmunch`), https://wordpress.org/plugins/mailmunch/
- **Affected versions:** all versions before 3.2.2
- **Fixed in:** 3.2.2 (Update to 3.2.2 or later.)
- **Severity:** Medium 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L)
- **Weakness:** CWE-862
- **Usage among sites WPSec scans:** plugin Low, affected versions None seen (as of 2026-10-13)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/mailmunch
- **Fix released:** 2026-10-08
- **Published:** 2026-10-13
- **URL:** https://wpsec.com/vuln/WPSEC-2026-0827/

## 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/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-0827/

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.