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GHSA-3c9c-2p65-qvwv

Prototype pollution in aurelia-path

Source: GitHub Advisory Database (reviewed) Critical CVE-2021-41097

Packages

EcosystemPackageAffectedFixed in
npm aurelia-path < 1.1.7 1.1.7

Details

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

### Impact The vulnerability exposes Aurelia application that uses `aurelia-path` package to parse a string. The majority of this will be Aurelia applications that employ the `aurelia-router` package. An example is this could allow an attacker to change the prototype of base object class `Object` by tricking an application to parse the following URL: `https://aurelia.io/blog/?__proto__[asdf]=asdf` ### Patches The problem should be patched in version `1.1.7`. Any version earlier than this is vulnerable. ### Workarounds A partial work around is to free the Object prototype: ```ts Object.freeze(Object.prototype) ```

References

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