CVE-2026-75872 — HTML Injection in MailerUp double opt-in verification email
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…
Published: 2026-08-18 · CVSS: 6.9 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7