Injection and Command Injection in devcert

published 2020-07-10 6 y ago modified 2026-06-17 4 mo ago also GHSA-4228-7qvx-f4rq , EUVD-2021-0927

cvss: 9.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.8%; EPSS 2.8% chance of exploitation in 30 days, percentile 86%
public exploits: 0; none known

A command injection vulnerability in the `devcert` module may lead to remote code execution when users of the module pass untrusted input to the `certificateFor` function.

Patch / fix

fixed in 1

npm devcert 1.1.2

Exploit prediction

2.77% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

hackerone.com https://hackerone.com/reports/863544 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
npm	devcert	<1.1.2	1.1.2

Affected products

n/a devcert

Classification

Weakness

CWE-77 Improper Neutralization of Special Elements used in a Command
CWE-78 Improper Neutralization of Special Elements used in an OS Command
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

hackerone.com /reports/863544
web, exploit, issue-tracking, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2020-8186
advisory

Sources

CVE List CVE-2020-8186
GitHub Advisory GHSA-4228-7qvx-f4rq
NVD CVE-2020-8186

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary