NoSQL Injection in loopback-connector-mongodb
Versions of loopback-connector-mongodb before 3.6.0 are vulnerable to NoSQL injection.
MongoDB Connector for LoopBack fails to properly sanitize a filter passed to query the database by allowing the dangerous $where property to be passed to the MongoDB Driver. The Driver allows the special $where property in a filter to execute JavaScript (client can pass in a malicious script) on the database Driver. This is an intended feature of MongoDB unless disabled (instructions here).
A proof of concept malicious query:
GET /POST filter={"where": {"$where": "function(){sleep(5000); return this.title.contains('Hello');}"}}The above makes the database sleep for 5 seconds and then returns all “Posts” with the title containing the word Hello.
Recommendation
Update to version 3.6.0 or later.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | loopback-connector-mongodb | < 3.6.0 | 3.6.0 |
References
- https://github.com/strongloop/loopback-connector-mongodb/issues/403
- https://github.com/strongloop/loopback-connector-mongodb/pull/452
- https://github.com/strongloop/loopback-connector-mongodb/commit/ee24cd08b8ccc32711264831c71b1da628df357b
- https://loopback.io/doc/en/lb3/Security-advisory-08-15-2018.html
- https://www.npmjs.com/advisories/696
- Weakness (CWE)
CWE-89- Platform
- npm
- Package
loopback-connector-mongodb- Disclosed
- 04.06.2019
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-m734-r4g6-34f9 - CC BY 4.0
Vulnerability history: loopback-connector-mongodb
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
- 2
- First → latest
- 06.2019 09.2020
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 2
Disclosures per year
- 2019: 1
- 2020: 1
- 2021: 0
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
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