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CVE-2022-21213 Details

Description

This affects all versions of package mout. The deepFillIn function can be used to 'fill missing properties recursively', while the deepMixIn mixes objects into the target object, recursively mixing existing child objects as well. In both cases, the key used to access the target object recursively is not checked, leading to exploiting this vulnerability. **Note:** This vulnerability derives from an incomplete fix of [CVE-2020-7792](https://security.snyk.io/vuln/SNYK-JS-MOUT-1014544).

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/mout/mout/blob/master/src/object/deepFillIn.js	CVE	ExploitThird Party Advisory
https://github.com/mout/mout/blob/master/src/object/deepMixIn.js	CVE	ExploitThird Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-2870623	CVE	ExploitThird Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2870622	CVE	ExploitThird Party Advisory
https://snyk.io/vuln/SNYK-JS-MOUT-2342654	CVE	ExploitThird Party Advisory
https://github.com/mout/mout/blob/master/src/object/deepFillIn.js	[email protected]	ExploitThird Party Advisory
https://github.com/mout/mout/blob/master/src/object/deepMixIn.js	[email protected]	ExploitThird Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-2870623	[email protected]	ExploitThird Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2870622	[email protected]	ExploitThird Party Advisory
https://snyk.io/vuln/SNYK-JS-MOUT-2342654	[email protected]	ExploitThird Party Advisory

see all 10 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-1321	Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')	[email protected]

Affected Products

Product	Versions
moutjs mout	All versions
CPE cpe:2.3:a:moutjs:mout::::::node.js::* Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Jun 28, 2022	Initial Analysis	[email protected]
Jun 17, 2022	CVE Modified	[email protected]