Sequelize is a Node.js ORM tool. In versions prior to 6.19.1 a SQL injection exploit exists related to replacements. Parameters which are passed through replacements are not properly escaped which can lead to arbitrary SQL injection depending on the specific queries in use. The issue has been fixed in Sequelize 6.19.1. Users are advised to upgrade. Users unable to upgrade should not use the `replacements` and the `where` option in the same query.
Sequelize all versions prior to 3.35.1, 4.44.3, and 5.8.11 are vulnerable to SQL Injection due to JSON path keys not being properly escaped for the MySQL/MariaDB dialects.
sequelize before version 3.35.1 allows attackers to perform a SQL Injection due to the JSON path keys not being properly sanitized in the Postgres dialect.