Persisted Cross-Site Scripting in extension "Forms Export" (frp_form_answers)

• Release Date: February 21, 2023
• Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
• Component: "Forms Export" (frp_form_answers)
• Composer Package Name: frappant/frp-form-answers
• Vulnerability Type: Cross-Site Scripting
• Affected Versions: 3.1.1 and below, 4.0.0 - 4.0.1
• Severity: High
• Suggested CVSS: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L/E:F/RL:O/RC:C
• References: CVE-2023-26091, CWE-79

Problem Description

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

Solution

Updated versions 3.1.2 and 4.0.2 are available from the TYPO3 extension manager, packagist and at
https://extensions.typo3.org/extension/download/frp_form_answers/3.1.2/zip
https://extensions.typo3.org/extension/download/frp_form_answers/4.0.2/zip
Users of the extension are advised to update the extension as soon as possible.

Credits

Thanks to Tim Schreiner for reporting the vulnerability and to Jonas Hirschi  for providing updated versions of the extension.

General Advice

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