A stored cross-site scripting (XSS) vulnerability exists in Magento 2.3 prior to 2.3.3 or 2.3.2-p1. An authenticated admin user can inject arbitrary JavaScript code when creating a content page via page builder.

As per the Magento Release 2.3.3, if you have already implemented the pre-release version of this patch (2.3.2-p1), it is highly recommended to promptly upgrade to 2.3.2-p2.

References

• https://nvd.nist.gov/vuln/detail/CVE-2019-8148
• https://web.archive.org/web/20220121051105/https://magento.com/security/patches/magento-2.3.3-and-2.2.10-security-update
• https://github.com/FriendsOfPHP/security-advisories/blob/master/magento/product-community-edition/CVE-2019-8148.yaml
• https://magento.com/security/patches/magento-2.3.3-and-2.2.10-security-update