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Threat Entry
Updated 2026-09-24
MailerLite – Signup forms (official) - Security Vulnerability (CVE-2026-3253)
The MailerLite – Signup forms (official) plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the forms() method of the AdminController class in all versions up to, and including, 1.7.21. This makes it possible for authenticated attackers, with Contributor-level access and above, to create or delete arbitrary signup forms.
PLUGIN
MailerLite – Signup forms (official)
CVE-2026-3253
Risk Score