confinit vulnerable to prototype pollution

published 2020-04-06 6 y ago modified 2026-09-10 1 mo ago also GHSA-jgpq-g82g-6c39 , EUVD-2020-0386

cvss: 5.3; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits: 0; none known

confinit through 0.3.0 is vulnerable to Prototype Pollution.The 'setDeepProperty' function could be tricked into adding or modifying properties of 'Object.prototype' using a '__proto__' payload.

Patch / fix

fixed in 1 links 1

npm confinit 0.4.0

github.com/davideicardi/confinit@a34e06c commit

Exploit prediction

1.02% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

snyk.io https://snyk.io/vuln/SNYK-JS-CONFINIT-564433 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:P/A:N
GitHub	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
npm	confinit	<0.4.0	0.4.0

Affected products

n/a confinit

Classification

Weakness

CWE-1321 Improperly Controlled Modification of Object Prototype Attributes
CWE-915 Improperly Controlled Modification of Dynamically-Determined Object Attributes

References

github.com /davideicardi/confinit/commit/a34e06ca5c1c8b047ef112ef188b2fe30d2a1eab
web, patch, third-party-advisory
snyk.io /vuln/SNYK-JS-CONFINIT-564433
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2020-7638
advisory

Sources

CVE List CVE-2020-7638
GitHub Advisory GHSA-jgpq-g82g-6c39
NVD CVE-2020-7638

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