TYPO3-EXT-SA-2019-021: Cross Site Scripting in extension "File List" (file_list)

  • Release Date: December 17, 2019
  • Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
  • Vulnerability Type: Cross Site Scripting
  • Affected Versions: 2.3.1 and below
  • Severity: Medium
  • Suggested CVSS v3.1: AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C
  • CVE: Not assigned yet

Problem Description

The extension fails to properly encode user input for output in HTML context.


An updated version 2.3.2 is available from the TYPO3 extension manager, Packagist and at


Users of the extension are advised to update the extension as soon as possible.


Credits go to Marcus Schwemer who discovered and reported the vulnerability.

General Advice

Follow the recommendations that are given in the TYPO3 Security Guide. Please subscribe to the typo3-announce mailing list.