CVE-2022-22143
Prototype Pollution
The package convict before 6.2.2 are vulnerable to Prototype Pollution via the convict function due to missing validation of parentKey. Note: This vulnerability derives from an incomplete fix of another vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Prototype Pollution
The package convict before 6.2.2 are vulnerable to Prototype Pollution via the convict function due to missing validation of parentKey. Note: This vulnerability derives from an incomplete fix of another vulnerability
- Record
CVE-2022-22143- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
EUVDEUVD-2022-1861
The package convict before 6.2.2 are vulnerable to Prototype Pollution via the convict function due to missing validation of parentKey. Note: This vulnerability derives from an incomplete fix of another vulnerability
- Record
EUVD-2022-1861- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-x2w5-725j-gf2g
Prototype Pollution in convict
Impact
- An attacker can inject attributes that are used in other components
- An attacker can override existing attributes with ones that have incompatible type, which may lead to a crash.
The main use case of Convict is for handling server-side configurations written by the admins owning the servers, and not random users. So it's unlikely that an admin would deliberately sabotage their own server. Still a situation can happen where an admin not knowledgeable about JavaScript could be tricked by an attacker into writing the malicious JavaScript code into some config files.
Patches
The problem is patched in [email protected]. Users should upgrade to [email protected].
Workarounds
No way for users to fix or remediate the vulnerability without upgrading
References
- https://www.huntr.dev/bounties/1-npm-convict/
- #384
- 3b86be087d8f14681a9c889d45da7fe3ad9cd880
- 1ea0ab19c5208f66509e1c43b0d0f21c1fd29b75
For more information
If you have any questions or comments about this advisory: add your question as a comment in #384
- Record
GHSA-x2w5-725j-gf2g- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-1321
- Updated
- 2026-11-02
NVD
The package convict before 6.2.2 are vulnerable to Prototype Pollution via the convict function due to missing validation of parentKey. Note: This vulnerability derives from an incomplete fix of another vulnerability
- Record
CVE-2022-22143- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-1321
- Updated
- 2026-11-02
OSV
Prototype Pollution
The package convict before 6.2.2 are vulnerable to Prototype Pollution via the convict function due to missing validation of parentKey. Note: This vulnerability derives from an incomplete fix of another vulnerability
- Record
CVE-2022-22143- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-x2w5-725j-gf2g
Prototype Pollution in convict
Impact
- An attacker can inject attributes that are used in other components
- An attacker can override existing attributes with ones that have incompatible type, which may lead to a crash.
The main use case of Convict is for handling server-side configurations written by the admins owning the servers, and not random users. So it's unlikely that an admin would deliberately sabotage their own server. Still a situation can happen where an admin not knowledgeable about JavaScript could be tricked by an attacker into writing the malicious JavaScript code into some config files.
Patches
The problem is patched in [email protected]. Users should upgrade to [email protected].
Workarounds
No way for users to fix or remediate the vulnerability without upgrading
References
- https://www.huntr.dev/bounties/1-npm-convict/
- #384
- 3b86be087d8f14681a9c889d45da7fe3ad9cd880
- 1ea0ab19c5208f66509e1c43b0d0f21c1fd29b75
For more information
If you have any questions or comments about this advisory: add your question as a comment in #384
- Record
GHSA-x2w5-725j-gf2g- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-1321
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
convictnpm |
before 6.2.3 | 6.2.3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-22143 is a high vulnerability (CVSS 7.5) in Mozilla Convict, published April 20, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.18%, the 82nd percentile. Fixed in convict 6.2.3.
References
snyk.io/vuln/SNYK-JS-CONVICT-2340604
github.com/mozilla/node-convict/blob/5eb1314f85346760a3c31cb14510f2f0af11d0d3/packages/convict/src/main.js%23L569