CVE-2016-20018: SQL Injection Vulnerability in Knex.js
Summary
CVE-2016-20018: Knex.js has a limited SQL injection vulnerability. Affects knex versions < 2.4.0. Fixed in 2.4.0. How to fix ↓
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Background
Knex.js is a popular query builder for Node.js that provides a flexible and intuitive way to interact with databases. It allows developers to write SQL queries using JavaScript syntax, making it easier to build and maintain database queries. However, versions up to 2.3.0 of Knex.js are vulnerable to a limited SQL injection attack, which can bypass the WHERE clause of a SQL query. This vulnerability has been assigned the CVE identifier CVE-2016-20018 and has a CVSS score of 7.5, indicating a high severity level.
Vulnerability Detail
The SQL injection vulnerability in Knex.js allows an attacker to manipulate the SQL query by injecting malicious input. By crafting a specially crafted input, an attacker can bypass the WHERE clause of a SQL query, potentially leading to unauthorized access, data leakage, or other malicious activities. This vulnerability has been fixed in version 2.4.0 of Knex.js.
How To Fix
Latest published version: 3.3.0 as of 23 Oct 2026
npm install knex@3.3.0Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
2.4.0
This is the first release that contains the fix.
npm install knex@2.4.0Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If upgrading to the latest version is not immediately feasible, developers can implement input validation and parameterized queries to mitigate the risk of SQL injection attacks. By validating and sanitizing user input and using parameterized queries, the application can prevent malicious input from being executed as part of the SQL query. Here is an example of using parameterized queries with Knex.js:
const knex = require('knex');
const query = knex('users').where('username', '=', req.body.username).toString();
// Use parameterized query
const result = await knex.raw(query, [req.body.username]);
Conclusion
In conclusion, Knex.js versions up to 2.3.0 are vulnerable to a limited SQL injection attack. This vulnerability can be exploited to bypass the WHERE clause of a SQL query, potentially leading to unauthorized access or data leakage. To mitigate this risk, developers should upgrade to version 2.4.0 or higher of Knex.js. If immediate upgrade is not possible, implementing input validation and parameterized queries can provide temporary protection. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
Knex.js is a query builder for Node.js that allows developers to write SQL queries using JavaScript syntax. It provides a flexible and intuitive way to interact with databases.
A SQL injection vulnerability occurs when an application does not properly validate or sanitize user input before including it in a SQL query. This allows an attacker to manipulate the query and potentially execute arbitrary SQL commands.
The SQL injection vulnerability in Knex.js can allow an attacker to bypass the WHERE clause of a SQL query, potentially leading to unauthorized access, data leakage, or other malicious activities.
Yes, this vulnerability has been fixed in version 2.4.0 of Knex.js. It is recommended to upgrade to the latest version to mitigate the risk.
To protect your application from SQL injection attacks, you should implement input validation and use parameterized queries. Input validation ensures that user input is properly sanitized, while parameterized queries prevent malicious input from being executed as part of the SQL query.
References
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