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CVE-2026-75872

HTML Injection in MailerUp double opt-in verification email PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
maalfer / MailerUpaffected 0 before 1.1.3

CWE

CWE-80

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.