CVE-2021-3918

Public Exploit

Prototype Pollution in kriszyp/json-schema

Description

json-schema is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

References

Link	Tags
https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9	issue tracking patch exploit third party advisory
https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741	third party advisory patch
https://lists.debian.org/debian-lts-announce/2022/12/msg00013.html	third party advisory mailing list
https://security.netapp.com/advisory/ntap-20250117-0004/

Frequently Asked Questions

What is the severity of CVE-2021-3918?: CVE-2021-3918 has been scored as a critical severity vulnerability.
How to fix CVE-2021-3918?: To fix CVE-2021-3918, 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-2021-3918 being actively exploited in the wild?: It is possible that CVE-2021-3918 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-3918?: CVE-2021-3918 affects kriszyp kriszyp/json-schema.

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Description

Category

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

References

Frequently Asked Questions