Vulnerability · Published May 14, 2021 · Assigned by Mend

CVE-2021-25943

Critical 9.8

In plain English

A critical-severity prototype pollution in 101. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 3.3% (higher than 89% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)3.3%top 11.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Prototype pollution vulnerability in '101' versions 1.0.0 through 1.6.3 allows an attacker to cause a denial of service and may lead to remote code execution.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	101	no fix listed	GHSA-cwcx-rxgc-cmw3

Affected products (as reported)

Vendor	Product	Versions
n/a	101	1.0.0, 1.1.0, 1.1.1, 1.2.0, 1.3.0, 1.3.1, 1.4.0, 1.5.0, 1.6.0, 1.6.1, 1.6.2, 1.6.3

Weakness: CWE-1321 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25943 x_refsource_MISC
https://github.com/tjmehta/101/blob/d87f63ce2a4cbdc476e8287abd78327c3144d646/set.js#L52 x_refsource_MISC