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Threat intelligence

MailChimp Forms by MailMunch <= 3.2.7 - Missing Authorization to Authenticated (Subscriber+) MailMunch Integration Takeover via 'sign_in' AJAX Action

CVE-2026-7520 · mailchimp-forms-by-mailmunch

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Mailchimp Forms By Mailmunch at a vulnerable version. How SiteRespond intelligence works

Vulnerability
MailChimp Forms by MailMunch <= 3.2.7 - Missing Authorization to Authenticated (Subscriber+) MailMunch Integration Takeover via 'sign_in' AJAX Action
Affected software
mailchimp-forms-by-mailmunch(Plugin)
Affected versions
  • ≤ 3.2.7
Authentication
Authenticated (see advisory title)
Vulnerability type
Other
Published
4 August 2026
CISA KEV
Not listed in CISA KEV at last catalog refresh
Impact
This advisory describes a other issue in the affected software. Review the source advisory and your installed version to assess exposure.
Source

Data imported from Wordfence Intelligence (advisory c9d00ee8-b9df-4044-a5e2-320391d6c9b1). Methodology and redistribution notes

Check whether your installed version is affected

SiteRespond Defence matches your installed Mailchimp Forms By Mailmunch version against this catalog when the Defence plugin is connected to your WordPress site.