The account lockout mechanism could leak the Magento site’s contact e-mail.
Part of patch MAGENTO 2.0.16 AND 2.1.9 SECURITY UPDATE
This vulnerability affects the following application versions:
- Magento 2.1.0
- Magento 2.1.0-rc1
- Magento 2.1.0-rc2
- Magento 2.1.0-rc3
- Magento 2.1.1
- Magento 2.1.2
- Magento 2.1.3
- Magento 2.1.4
- Magento 2.1.5
- Magento 2.1.6
- Magento 2.1.7
- Magento 2.1.8