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CVE-2021-3757

Prototype Pollution in immerjs/immer

immer is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

CVSS 3.1 · 9.8 Critical EPSS 1.7% KEV · Not listed
Vendors
Immer Project Redhat
Products
Immer Rhmt
CVE-2021-23436

Prototype Pollution

This affects the package immer before 9.0.6. A type confusion vulnerability can lead to a bypass of CVE-2020-28477 when the user-provided keys used in the path parameter are arrays. In particular, this bypass is possible because the condition (p === "__proto__" || p === "constructor") in applyPatches_ returns false if p is ['__proto__'] (or ['constructor']). The === operator (strict equality operator) returns false if the operands have different type.

CVSS 3.1 · 5.6 Medium EPSS 1.8% KEV · Not listed
Vendors
Immer Project Redhat
Products
Immer Jboss Enterprise Bpms Platform