- Release Date: July 07, 2020
- Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
- Component: Google reCAPTCHA (v2/v3) (jh_captcha)
- Vulnerability Type: Cross-Site Scripting
- Affected Versions: 3.0.2 - 3.0.0 and 2.1.3 and below
- Severity: Medium
- Suggested CVSS v3.1: AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C
- References: CVE-2020-15514
The extension fails to properly encode user input for output in HTML context. The issue is only exploitable by backend users with access to TypoScript settings of the extension.
Updated versions 2.1.4 and 3.0.3 are available from the TYPO3 extension manager, Packagist and at
Users of the extension are advised to update the extension as soon as possible.
Thanks to Sven Jürgens for discovering and reporting the vulnerability and to Jan Haffner for providing an updated version of the extension.