CVE-2020-7792

Name: CVE-2020-7792
Creator: NVD / NIST
Published: 2020-12-11T11:15:11.633+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.12%

Last modified Jun 17, 2026

CVE-2020-7792 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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'. EPSS estimates a 2.12% chance of exploitation in the next 30 days.

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 a Prototype Pollution.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

2.12%

79.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1321

Affected Software

Vendor	Product	Versions
Moutjs	Mout	All versions

References

https://github.com/mout/mout/blob/master/src/object/deepFillIn.jsExploit, Third Party Advisory
https://github.com/mout/mout/blob/master/src/object/deepMixIn.jsExploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1050374Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1050373Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-MOUT-1014544Exploit, Third Party Advisory
https://github.com/mout/mout/blob/master/src/object/deepFillIn.jsExploit, Third Party Advisory
https://github.com/mout/mout/blob/master/src/object/deepMixIn.jsExploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1050374Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1050373Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-MOUT-1014544Exploit, Third Party Advisory

Timeline

Published: Dec 11, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7792?

How severe is CVE-2020-7792?

CVE-2020-7792 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.12% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7792?

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-2020-7792?

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

Scan your code now

Source: NVD / NIST