CVE-2021-40663 Prototype Pollution in deep.assign

Critical 9.8 Published Updated

Prototype pollution in deep.assign allows attackers to modify object prototypes, potentially leading to code execution or privilege escalation.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2021-40663?

CVE-2021-40663 is a critical vulnerability in n/a, published on 30 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

deep.assign npm package 0.0.0-alpha.0 is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').

Weakness: CWE-1321

Which versions are affected by CVE-2021-40663?

2 open source packages ship an affected version, including deep.assign. It affects 1 product.

PackageAffectedFixed in
deep.assign npmAll versionsNone
deep.assign npmAll versionsNone

Products include Deep.assign Project Deep.assign.

How do I fix CVE-2021-40663?

No fix has been published for CVE-2021-40663 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-40663 being exploited?

There is no known exploitation of CVE-2021-40663 in the wild and no public exploit code.

Sources

Also known as GHSA-3829-mgmw-jcg4.

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