CVE-2026-75872

HTML Injection in the public subscription form in maalfer MailerUp before 1.1.3 allows unauthenticated remote attackers to have the application send a message carrying arbitrary HTML, to an attacker-chosen address and from the form owner's configured sending identity, via the first_name field of the subscription request, which is interpolated unescaped into the double opt-in verification email.

CVSS

No CVSS.

References

Link	Resource
https://github.com/maalfer/mailerup/commit/da4aedc9621911df4ce0cc8f0b321dd6d10f40a5
https://github.com/maalfer/mailerup/releases/tag/v1.1.3
https://secur0.com/en/cna/cve-list/cve-2026-75872-html-injection-in-mailerup-double-optin-verification-email

Configurations

No configuration.

History

22 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) Inyección HTML en el formulario de suscripción público en maalfer MailerUp anterior a 1.1.3 permite a atacantes remotos no autenticados que la aplicación envíe un mensaje que contenga HTML arbitrario, a una dirección elegida por el atacante y desde la identidad de envío configurada del propietario del formulario, a través del campo first_name de la solicitud de suscripción, que se interpola sin escapar en el correo electrónico de verificación de doble opt-in.

Information

Published : 2026-08-18 15:17

Updated : 2026-10-22 22:10

NVD link : CVE-2026-75872

Mitre link : CVE-2026-75872

CVE.ORG link : CVE-2026-75872

JSON object : View

Products Affected

No product.

CWE

CWE-80

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

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