CVE-2022-22143

Name: CVE-2022-22143
Creator: NVD / NIST
Published: 2022-05-01T16:15:08.307+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.03%

Last modified Jun 17, 2026

CVE-2022-22143 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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](https://security.snyk.io/vuln/SNYK-JS-CONVICT-1062508). EPSS estimates a 2.03% chance of exploitation in the next 30 days.

Description

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](https://security.snyk.io/vuln/SNYK-JS-CONVICT-1062508)

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.03%

78.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1321

Affected Software

Vendor	Product	Versions
Mozilla	Convict	< 6.2.2

References

https://github.com/mozilla/node-convict/blob/5eb1314f85346760a3c31cb14510f2f0af11d0d3/packages/convict/src/main.js%23L569Broken Link
https://github.com/mozilla/node-convict/commit/3b86be087d8f14681a9c889d45da7fe3ad9cd880Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-CONVICT-2340604Exploit, Patch, Third Party Advisory
https://github.com/mozilla/node-convict/blob/5eb1314f85346760a3c31cb14510f2f0af11d0d3/packages/convict/src/main.js%23L569Broken Link
https://github.com/mozilla/node-convict/commit/3b86be087d8f14681a9c889d45da7fe3ad9cd880Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-CONVICT-2340604Exploit, Patch, Third Party Advisory

Timeline

Published: May 1, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-22143?

How severe is CVE-2022-22143?

CVE-2022-22143 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.03% probability of exploitation in the next 30 days.

How do I fix CVE-2022-22143?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-22143?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST