EUVD-2026-60820
GHSA-gj4p-rxxg-6jhm
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from Vendor (Secur0) · only source for this CVE.
CVSS VectorVendor: Secur0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
HTML injection in MailerUp's public subscription form (all versions before 1.1.3) allows unauthenticated remote attackers to embed arbitrary HTML into the double opt-in verification email the application sends, using the form owner's configured sending identity and an attacker-specified recipient address. The root cause is unescaped interpolation of the subscriber-supplied first_name field directly into the HTML email body, confirmed by the patch commit which adds Django's escape() call. …
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Unauthenticated account self-registration in MailerUp before 1.0.1 lets any remote attacker POST to /api/auth/register/
Open redirect in Mailerup's click-tracking endpoint allows remote unauthenticated attackers to redirect victims to arbit
Same weakness CWE-80 – Basic XSS
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External POC / Exploit Code
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