All the vulnerabilities related to the version 2.9.2 of the package
Parcel has an Origin Validation Error vulnerability
npm parcel 2.0.0-alpha and before has an Origin Validation Error vulnerability. Malicious websites can send XMLHTTPRequests to the application's development server and read the response to steal source code when developers visit them.
msgpackr's conversion of property names to strings can trigger infinite recursion
When decoding user supplied MessagePack messages, users can trigger stuck threads by crafting messages that keep the decoder stuck in a loop.
The fix is available in v1.10.1
Exploits seem to require structured cloning, replacing the 0x70 extension with your own (that throws an error or does something other than recursive referencing) should mitigate the issue.