Ubuntu USN · USN-8242-2

PostfixAdmin vulnerability

Published: Thu, 07 May 2026 08:00

CVE-2023-28447

Summary

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

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.

Recommended actions per Ubuntu release

StackPatch playbook auto-generated per release codename and per affected package.

Ubuntu noble

postfixadmin→3.3.13-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.3.13-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y postfixadmin=3.3.13-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.
postfixadmin→3.3.13-1ubuntu0.1~esm1apt_upgrade_esm
Fixed at 3.3.13-1ubuntu0.1~esm1 — ESM-only. Enable Ubuntu Pro (free for 5 personal machines) or treat as watch item.
```
sudo pro attach <token>
sudo apt-get update
sudo apt-get install --only-upgrade -y postfixadmin=3.3.13-1ubuntu0.1~esm1
```
Sign up at https://ubuntu.com/pro. Free for personal + small-team use.

Are YOU affected by USN-8242-2?

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