How severe is CVE-2022-21186?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2022-21186 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Acrontum Filesystem-Template

CVE-2022-21186

The package @acrontum/filesystem-template before 0.0.2 are vulnerable to Arbitrary Command Injection due to the fetchRepo API missing sanitization of the href field of external input.

Published 2022-08-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.254 (97.9th percentile), scored 2026-10-04.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.254 · newest: 0.254 · change: 0.000

Affected products

Acrontum Filesystem-Template
@Acrontum/filesystem-Template — versions unspecified

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

security.snyk.io/vuln/SNYK-JS-ACRONTUMFILESYSTEMTEMPLATE-2419071 (Exploit, Third Party Advisory)
github.com/acrontum/filesystem-template/pull/14/commits/baeb727b60991ad82d9e63a… (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-21186?: CVE-2022-21186 is a critical-severity vulnerability in Acrontum Filesystem-Template. CVSS score: 9.8/10. Published 2022-08-05.
How severe is CVE-2022-21186?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-21186 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.