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CVE-2022-21187

31
FAUCET Score

CVE-2022-21187 is a critical command injection vulnerability affecting the libvcs package prior to version 0.11.1. Specifically, the update_repo function, when using Mercurial (hg), improperly passes the URL parameter to the hg clone command, allowing attackers to inject arbitrary commands. With a CVSS score of 9.8 (CRITICAL), this vulnerability has a network attack vector, low attack complexity, and can lead to complete compromise of confidentiality, integrity, and availability. While no active exploitation, public exploit code, or significant community discussion has been observed, its high severity warrants immediate patching.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.11.1CPE matchmatch criteria
cpe:2.3:a:libvcs_project:libvcs:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.74%
Probability of exploitation in next 30 days
EPSS Percentile
88.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0374 is in the 81st percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: libvcsFixed in: 0.11.1
pippatch availablevia ghsa
Product: vcspullFixed in: 1.11.1

Vendor Advisories (1)

pipGHSA-mv2w-4jqc-6fg4critical

Command injection in libvcs and vcspull

Mar 15, 2022

References

github.com / vcs-python/libvcs/blob/v0.11.1/CHANGES%23libvcs-0111-2022-03-12
Release NotesThird Party Advisory
github.com / vcs-python/libvcs/pull/306
PatchThird Party Advisory
snyk.io / vuln/SNYK-PYTHON-LIBVCS-2421204
Third Party Advisory