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[USN-8242-2] PostfixAdmin vulnerability

Posted on 07 May 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8242-2
May 07, 2026

postfixadmin vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS

Summary:

PostfixAdmin could be made to run malicious JavaScript in the user's
browser if it received specially crafted input.

Software Description:
- postfixadmin: Virtual mail hosting interface for Postfix

Details:

USN-8242-1 fixed a vulnerability in CiviCRM. This update provides the
corresponding fix for PostfixAdmin.

Original advisory details:

Takuya Aramaki discovered that Smarty, vendored in CiviCRM, did not
properly escape JavaScript code. An attacker could possibly use this issue
to conduct a cross-site scripting attack.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.04 LTS
postfixadmin 3.3.13-1ubuntu0.1~esm1
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8242-2
https://ubuntu.com/security/notices/USN-8242-1
CVE-2023-28447

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