CVE-2026-75872 (GCVE-0-2026-75872)

Vulnerability from cvelistv5 – Published: 2026-08-18 14:06 – Updated: 2026-08-18 16:04 X_Open Source
VLAI
Title
HTML Injection in MailerUp double opt-in verification email
Summary
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.
Severity
6.9 (Medium)
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
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 16:04 UTC
CWE
  • CWE-80 - Improper neutralization of Script-Related HTML tags in a web page (basic XSS)
Assigner
References
Impacted products
Vendor Product Version
maalfer MailerUp Affected: 0 , < 1.1.3 (semver)
    cpe:2.3:a:maalfer:mailerup:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-18 12:43
Credits
Nacho García Egea Xoán M. Otero Jorge Secur0 CNA Mario Álvarez Fernández
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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