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CVE-2025-13993

MailerLite – Signup forms (official) <= 1.7.16 - Authenticated (Administrator+) Stored Cross-Site Scripting

The MailerLite – Signup forms (official) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'form_description' and 'success_message' parameters in versions up to, and including, 1.7.16 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator access or higher, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Mailerlite Wordpress
Products
Mailerlite Mailerlite Signup Forms Wordpress
CVE-2026-3253

MailerLite – Signup forms (official) <= 1.7.21 - Missing Authorization to Authenticated (Contributor+) Form Creation and Deletion

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.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Mailerlite Wordpress-extensions
Products
Mailerlite Signup Forms Mailerlite-signup Forms
CVE-2022-33201

WordPress MailerLite – Signup forms (official) plugin <= 1.5.7 - Cross-Site Request Forgery (CSRF) vulnerability

Cross-Site Request Forgery (CSRF) vulnerability in MailerLite – Signup forms (official) plugin <= 1.5.7 at WordPress allows an attacker to change the API key.

CVSS 3.1 · 6.3 Medium EPSS < 1% KEV · Not listed
Vendors
Mailerlite
Products
Mailerlite Signup Forms
CVE-2022-1604

MailerLite < 1.5.4 - Reflected Cross-Site Scripting

The MailerLite WordPress plugin before 1.5.4 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Mailerlite
Products
Mailerlite Signup Forms