CVE-2024-53900: Mongoosejs Mongoose SQLi Vulnerability

CVE-2024-53900 Overview

CVE-2024-53900 is a search injection vulnerability affecting Mongoose, a popular MongoDB object modeling library for Node.js. The vulnerability exists due to improper handling of the $where operator in match operations, which can allow attackers to inject malicious queries and potentially compromise the confidentiality and integrity of database contents.

Critical Impact

This vulnerability enables attackers to perform NoSQL injection attacks through the $where operator, potentially leading to unauthorized data access and manipulation in MongoDB databases.

Affected Products

• Mongoose versions prior to 8.8.3
• Mongoose 7.0.0-rc0 and related versions
• Mongoose 8.0.0-rc0 and related versions

Discovery Timeline

• 2024-12-02 - CVE-2024-53900 published to NVD
• 2025-10-01 - Last updated in NVD database

Technical Details for CVE-2024-53900

Vulnerability Analysis

This vulnerability is classified as CWE-89 (SQL Injection), though in this context it manifests as a NoSQL injection specific to MongoDB. The flaw allows attackers to exploit the $where operator within Mongoose's match functionality. The $where operator in MongoDB accepts JavaScript expressions for query evaluation, making it particularly dangerous when user input is not properly sanitized.

When user-controlled input reaches the match operation without adequate validation, an attacker can craft malicious payloads that execute arbitrary JavaScript within the MongoDB query context. This can result in unauthorized access to sensitive data, modification of query logic, or extraction of information that should be protected.

The network-based attack vector with no authentication requirements makes this vulnerability particularly concerning for applications that expose Mongoose-based APIs to the internet.

Root Cause

The root cause of CVE-2024-53900 lies in insufficient input validation and sanitization when processing the $where operator within Mongoose's match operations. The library failed to properly restrict or escape user-supplied input before incorporating it into MongoDB queries that utilize the $where clause.

The $where operator is inherently powerful as it allows server-side JavaScript execution within queries. Without proper safeguards, attackers can inject arbitrary JavaScript code that gets executed in the context of the MongoDB query engine.

Attack Vector

The attack can be executed remotely over the network without requiring authentication. An attacker can exploit this vulnerability by sending specially crafted input to an application endpoint that uses Mongoose's match functionality with the $where operator.

The exploitation mechanism involves injecting malicious JavaScript code through user-controllable parameters that eventually get passed to a Mongoose query using $where. This can allow attackers to bypass authentication checks, access unauthorized data, or manipulate query results.

For technical details on the vulnerability mechanism, refer to the GitHub Security Advisory and the security fix commit.

Detection Methods for CVE-2024-53900

Indicators of Compromise

• Unusual MongoDB query patterns containing $where operators with JavaScript code in query logs
• Unexpected data access patterns or authorization bypass events in application logs
• Anomalous query execution times that may indicate JavaScript execution within queries
• Database audit logs showing queries with injected JavaScript expressions

Detection Strategies

• Implement application-level logging to capture all Mongoose queries utilizing the $where operator
• Deploy Web Application Firewall (WAF) rules to detect NoSQL injection patterns in incoming requests
• Monitor MongoDB slow query logs for suspicious JavaScript execution within $where clauses
• Use static code analysis tools to identify unsafe usage of $where in application code

Monitoring Recommendations

• Enable MongoDB query profiling to capture detailed query execution information
• Set up alerts for unusual patterns in database access logs that may indicate injection attempts
• Monitor application error logs for MongoDB query failures that could indicate attack attempts
• Implement rate limiting on API endpoints that interact with Mongoose models

How to Mitigate CVE-2024-53900

Immediate Actions Required

• Upgrade Mongoose to version 8.8.3 or later immediately
• Audit application code for any usage of the $where operator in Mongoose queries
• Implement strict input validation on all user-supplied data before it reaches database queries
• Consider disabling the $where operator at the MongoDB server level if not required

Patch Information

The Mongoose maintainers have released version 8.8.3 which addresses this vulnerability. The fix is documented in the GitHub commit. Review the Mongoose Changelog and releases page for complete patch details.

Workarounds

• Avoid using the $where operator in Mongoose queries until patching is complete
• Implement strict input validation using allowlists for all user-supplied query parameters
• Use Mongoose's built-in query sanitization methods and avoid passing raw user input to queries
• Configure MongoDB to disable JavaScript execution if the $where operator is not essential for your application

# Upgrade Mongoose to the patched version
npm update mongoose@8.8.3

# Verify installed version
npm list mongoose