CVE-2021-23771

Public Exploit

Sandbox Bypass

Description

This affects all versions of package notevil; all versions of package argencoders-notevil. It is vulnerable to Sandbox Escape leading to Prototype pollution. The package fails to restrict access to the main context, allowing an attacker to add or modify an object's prototype. **Note:** This vulnerability derives from an incomplete fix in [SNYK-JS-NOTEVIL-608878](https://security.snyk.io/vuln/SNYK-JS-NOTEVIL-608878).

References

Link	Tags
https://snyk.io/vuln/SNYK-JS-NOTEVIL-2385946	third party advisory exploit
https://snyk.io/vuln/SNYK-JS-ARGENCODERSNOTEVIL-2388587	third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-23771?: CVE-2021-23771 has been scored as a medium severity vulnerability.
How to fix CVE-2021-23771?: To fix CVE-2021-23771, 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-2021-23771 being actively exploited in the wild?: It is possible that CVE-2021-23771 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.
What software or system is affected by CVE-2021-23771?: CVE-2021-23771 affects n/a notevil, n/a argencoders-notevil.

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Description

Category

CWE-1321 – Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

References

Frequently Asked Questions