Insufficient server-side validation of user input could allow an attacker to bypass file upload restrictions in Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2.
github.com/FriendsOfPHP/security-advisories/blob/master/magento/product-community-edition/CVE-2019-7861.yaml
github.com/magento/magento2
magento.com/security/patches/magento-2.3.2-2.2.9-and-2.1.18-security-update-13
nvd.nist.gov/vuln/detail/CVE-2019-7861
web.archive.org/web/20211206084839/https://magento.com/security/patches/magento-2.3.2-2.2.9-and-2.1.18-security-update-13