CVE-2020-8131

Public Exploit

Description

Arbitrary filesystem write vulnerability in Yarn before 1.22.0 allows attackers to write to any path on the filesystem and potentially lead to arbitrary code execution by forcing the user to install a malicious package.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.26% Top 25%
Third-Party Advisory github.com Third-Party Advisory hackerone.com
Affected: n/a yarn
Published at:
Updated at:

References

Link Tags
https://hackerone.com/reports/730239 third party advisory exploit
https://github.com/yarnpkg/yarn/pull/7831 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2020-8131?
CVE-2020-8131 has been scored as a high severity vulnerability.
How to fix CVE-2020-8131?
To fix CVE-2020-8131, 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-2020-8131 being actively exploited in the wild?
It is possible that CVE-2020-8131 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-2020-8131?
CVE-2020-8131 affects n/a yarn.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.