TI-2022-05586 Aliases CVE-2022-21190 GHSA-jjf5-wx3j-3fv7

Prototype pollution in convict

MEDIUM 49CWE-1321Published 2022-05-13 · Updated 2024-09-17

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

This affects the package convict before 6.2.3. This is a bypass of [CVE-2022-22143](https://security.snyk.io/vuln/SNYK-JS-CONVICT-2340604). The [fix](https://github.com/mozilla/node-convict/commit/3b86be087d8f14681a9c889d45da7fe3ad9cd880) 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.

Why it matters now

EPSS 0.03974 90th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed convict: 6.2.3convict (npm): 6.2.3

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	convict	before 6.2.3	6.2.3	Patch available	CNA
—	convict (npm)	before 6.2.3	6.2.3	Patch available	GHSA-jjf5-wx3j-3fv7

convict Vendor— Affected before 6.2.3 Fixed in 6.2.3 Patch available CNA
convict (npm) Vendor— Affected before 6.2.3 Fixed in 6.2.3 Patch available GHSA-jjf5-wx3j-3fv7

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:mozilla:convict::::::node.js::*	before 6.2.3	Vulnerable	Mozilla

cpe:2.3:a:mozilla:convict:*:*:*:*:*:node.js:*:* Versions before 6.2.3 Vulnerable ·Mozilla

Remediation

Fix · CNA convict Fixed in 6.2.3
Fix · GHSA-jjf5-wx3j-3fv7 convict (npm) Fixed in 6.2.3 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Not affected: 1 product

Red Hat Advanced Cluster Security 3

Timeline

2026-10-02 Threatist record created from CVE-2022-21190
2026-10-03 Alias added: GHSA-jjf5-wx3j-3fv7

References

Exploit 1

https://gist.github.com/dellalibera/cebce20e51410acebff1f46afdc89808

Patch 2

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2022-21190

Other 2

TI-2023-00157 Prototype Pollution in convict CVSS 3.1HIGH 8.4
TI-2022-06479 Prototype pollution in convict CVSS 3.1CRITICAL 9.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences