CVE-2021-41116

Command injection in composer on Windows

Description

Composer is an open source dependency manager for the PHP language. In affected versions windows users running Composer to install untrusted dependencies are subject to command injection and should upgrade their composer version. Other OSs and WSL are not affected. The issue has been resolved in composer versions 1.10.23 and 2.1.9. There are no workarounds for this issue.

Category

8.2
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.34% Top 25%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: composer composer
Published at:
Updated at:

References

Link Tags
https://github.com/composer/composer/security/advisories/GHSA-frqg-7g38-6gcf third party advisory
https://github.com/composer/composer/commit/ca5e2f8d505fd3bfac6f7c85b82f2740becbc0aa third party advisory patch
https://www.sonarsource.com/blog/securing-developer-tools-package-managers/

Frequently Asked Questions

What is the severity of CVE-2021-41116?
CVE-2021-41116 has been scored as a high severity vulnerability.
How to fix CVE-2021-41116?
To fix CVE-2021-41116, 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-2021-41116 being actively exploited in the wild?
It is possible that CVE-2021-41116 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-2021-41116?
CVE-2021-41116 affects composer composer.
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