CVE-2022-21213

Public Exploit
Prototype Pollution

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).

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.61%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory snyk.io Third-Party Advisory snyk.io Third-Party Advisory snyk.io
Affected: n/a mout
Published at:
Updated at:

References

Link Tags
https://github.com/mout/mout/blob/master/src/object/deepFillIn.js third party advisory exploit
https://github.com/mout/mout/blob/master/src/object/deepMixIn.js third party advisory exploit
https://snyk.io/vuln/SNYK-JS-MOUT-2342654 third party advisory exploit
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2870622 third party advisory exploit
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-2870623 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2022-21213?
CVE-2022-21213 has been scored as a high severity vulnerability.
How to fix CVE-2022-21213?
To fix CVE-2022-21213, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-21213 being actively exploited in the wild?
It is possible that CVE-2022-21213 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-21213?
CVE-2022-21213 affects n/a mout.
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