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CVE PROGRAM SOURCE RECORD6.9 Medium

CVE-2026-75872

HTML Injection in MailerUp double opt-in verification email

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

maalfer MailerUp

Default version status: unaffected

  • 0 to < 1.1.3affected

References