CVE-2026-75872

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Source

https://cve.org/CVERecord?id=CVE-2026-75872

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75872.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-75872

Published

2026-08-18T14:06:37Z

Modified

2026-09-03T03:30:38Z

Severity

6.9 (Medium) CVSS_V4 - 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 CVSS Calculator

Summary

HTML Injection in MailerUp double opt-in verification email

Details

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.

Database specific

{
    "cna_assigner": "Secur0",
    "cwe_ids": [
        "CWE-80"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75872.json"
}

References

Affected packages

Git / github.com/maalfer/mailerup

Affected ranges

Type

GIT

Repo

https://github.com/maalfer/mailerup

Events

Introduced

Fixed

da4aedc9621911df4ce0cc8f0b321dd6d10f40a5

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.1.3"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION",
        "REFERENCES"
    ]
}

Affected versions

v1.*

v1.0.3

v1.1.0

v1.1.1

v1.1.2

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75872.json"