Prototype Pollution

published 2020-08-18 6 y ago modified 2026-06-17 4 mo ago also GHSA-j7cg-h9v9-6vqp , EUVD-2021-1112

cvss: 9.8; version 3.1, CNA
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

The package irrelon-path before 4.7.0; the package @irrelon/path before 4.7.0 are vulnerable to Prototype Pollution via the set, unSet, pushVal and pullVal functions.

Patch / fix

fixed in 4 links 1

npm irrelon-path 4.7.0
npm @irrelon/path 4.7.0
n/a irrelon-path 4.7.0
n/a @irrelon/path 4.7.0

github.com/Irrelon/irrelon-path@8a126b1 commit

Exploit prediction

2.82% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

snyk.io https://snyk.io/vuln/SNYK-JS-IRRELONPATH-598672 referenced PoC, tagged "exploit" by a source, unverified
snyk.io https://snyk.io/vuln/SNYK-JS-IRRELONPATH-598673 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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	irrelon-path	<4.7.0	4.7.0
npm	@irrelon/path	<4.7.0	4.7.0

Affected products

n/a irrelon-path
n/a @irrelon/path

Classification

Weakness

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

References

github.com /Irrelon/irrelon-path/commit/8a126b160c1a854ae511659c111413ad9910ebe3
web, patch, third-party-advisory
snyk.io /vuln/SNYK-JS-IRRELONPATH-598672
web, exploit, third-party-advisory
snyk.io /vuln/SNYK-JS-IRRELONPATH-598673
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2020-7708
advisory
github.com /Irrelon/irrelon-path
package

Sources

CVE List CVE-2020-7708
GitHub Advisory GHSA-j7cg-h9v9-6vqp
NVD CVE-2020-7708

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