CVE-2021-42581

Public Exploit

Description

Prototype poisoning in function mapObjIndexed in Ramda 0.27.0 and earlier allows attackers to compromise integrity or availability of application via supplying a crafted object (that contains an own property "__proto__") as an argument to the function. NOTE: the vendor disputes this because the observed behavior only means that a user can create objects that the user didn't know would contain custom prototypes

Category

9.1
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.12%
Third-Party Advisory github.com Third-Party Advisory jsfiddle.net
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/ramda/ramda/pull/3192 issue tracking third party advisory patch
https://jsfiddle.net/3pomzw5g/2/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-42581?
CVE-2021-42581 has been scored as a critical severity vulnerability.
How to fix CVE-2021-42581?
To fix CVE-2021-42581, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-42581 being actively exploited in the wild?
It is possible that CVE-2021-42581 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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