CVE WatchAug 5, 2026

CVE-2026-7520

The MailChimp Forms by MailMunch plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check o

CVSS

8.1

High

EPSS

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KEV

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Exploit Today

0-100

Published: Aug 5, 2026 · Last modified: Aug 5, 2026 · CWE-862

EPSS · 30d

Not enough EPSS history yet.

Technical description

The MailChimp Forms by MailMunch plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `sign_in()` and `sign_up()` AJAX handlers in all versions up to, and including, 3.2.7. This makes it possible for authenticated attackers, with Subscriber-level access and above, to relink the site's MailMunch integration to an attacker-controlled MailMunch account by submitting attacker-supplied credentials. Once relinked, all subscriber data captured by the plugin's forms is delivered to the attacker, and the forms/landing pages rendered on the site are pulled from the attacker's MailMunch account.

Official references

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