Prototype Pollution in convict
This affects the package convict before 6.2.3. This is a bypass of CVE-2022-22143. The fix introduced, relies on the startsWith method and does not prevent the vulnerability: before splitting the path, it checks if it starts with proto or this.constructor.prototype. To bypass this check it's possible to prepend the dangerous paths with any string value followed by a dot, like for example foo.proto or foo.this.constructor.prototype.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | convict | < 6.2.3 | 6.2.3 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2022-21190
- https://github.com/mozilla/node-convict/commit/1ea0ab19c5208f66509e1c43b0d0f21c1fd29b75
- https://gist.github.com/dellalibera/cebce20e51410acebff1f46afdc89808
- https://github.com/mozilla/node-convict
- https://github.com/mozilla/node-convict/blob/3b86be087d8f14681a9c889d45da7fe3ad9cd880/packages/convict/src/main.js%23L571
- https://github.com/mozilla/node-convict/blob/master/CHANGELOG.md%23623---2022-05-07
- https://snyk.io/vuln/SNYK-JS-CONVICT-2774757
- 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
convict- Disclosed
- 14.05.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-jjf5-wx3j-3fv7 - CC BY 4.0
Vulnerability history: convict
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
- 5
- First → latest
- 04.2022 03.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 3
- High 2
Disclosures per year
- 2022: 2
- 2023: 1
- 2024: 0
- 2025: 0
- 2026: 2
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