CVE-2022-21187: Command Injection

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-03-14 · updated 2026-06-17
Weakness: CWE-88

Description

The package libvcs before 0.11.1 are vulnerable to Command Injection via argument injection. When calling the update_repo function (when using hg), the url parameter is passed to the hg clone command. By injecting some hg options it was possible to get arbitrary command execution.

Affected products

libvcs: before 0.11.1 — fixed in 0.11.1

How to fix

Upgrade to a fixed version: libvcs 0.11.1. Check the vendor advisory for mitigations.

References

https://github.com/vcs-python/libvcs/blob/v0.11.1/CHANGES%23libvcs-0111-2022-03-12
https://github.com/vcs-python/libvcs/pull/306
https://snyk.io/vuln/SNYK-PYTHON-LIBVCS-2421204
https://github.com/vcs-python/libvcs/blob/v0.11.1/CHANGES%23libvcs-0111-2022-03-12
https://github.com/vcs-python/libvcs/pull/306
https://snyk.io/vuln/SNYK-PYTHON-LIBVCS-2421204

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