CVE-2021-27182

PoC —

CVSS 3.1

8.8 high

EPSS

2%p74

Published

Apr 14, 2021 (Apr 14, 2021)

Modified

Jun 17, 2026

Description

An issue was discovered in MDaemon before 20.0.4. There is an IFRAME injection vulnerability in Webmail (aka WorldClient). It can be exploited via an email message. It allows an attacker to perform any action with the privileges of the attacked user.

Vendors: altn
Products: mdaemon
Weakness: CWE-74
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (1.6%)

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