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Date: Wed, 28 Dec 2016 15:18:56 -0200
From: Dawid Golunski <>
Subject: [FD] SwiftMailer <= 5.4.5-DEV Remote Code Execution (CVE-2016-10074)

SwiftMailer <= 5.4.5-DEV Remote Code Execution (CVE-2016-10074)

Discovered by: Dawid Golunski (@dawid_golunski)

Severity: CRITICAL


An independent research uncovered a critical vulnerability in SwiftMailer that
could potentially be used by (unauthenticated) remote attackers to achieve
remote arbitrary code execution in the context of the web server user and
remotely compromise the target web application.

To exploit the vulnerability an attacker could target common website
components such as contact/feedback forms, registration forms, password
email resets and others that send out emails with the help of a vulnerable
version of the SwiftMailer class.

Despite the significant efforts in responsibly disclosing the vulnerability
to the vendor (since 2nd December).
The vulnerability remains unfixed as of 28 December.

The full advisory at:

The Video PoC will be very similar to:

The SwiftMailer PoC exploit:

More updates soon:

Dawid Golunski
t: @dawid_golunski

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