"npx create-react-app ..." audit comes with 3 high severity issues. How can I fix this?

I have a few react projects that were started using "npx create-react-app" and if I run "npm audit" they come back with:

# npm audit report

immer  <8.0.1
Severity: high
Prototype Pollution - https://npmjs.com/advisories/1603
fix available via `npm audit fix --force`
Will install react-scripts@2.0.5, which is a breaking change
node_modules/react-dev-utils/node_modules/immer
  react-dev-utils  >=6.0.6-next.9b4009d7
  Depends on vulnerable versions of immer
  node_modules/react-dev-utils
    react-scripts  >=2.0.6-next.9b4009d7
    Depends on vulnerable versions of react-dev-utils
    node_modules/react-scripts

3 high severity vulnerabilities

To address all issues (including breaking changes), run:
  npm audit fix --force

• I have tried running npm audit fix and that doesn't fix the issue.
• I have tried running npm audit fix --force which results in even more errors.
• I have tried running npm i immer@8.0.1 which also does not work.

I am using nvm with node version 14.15.5 and npm version 7.5.4. I recently updated nvm to the latest version (0.37.2) and changed the default to the latest node lts (14.15.5), so I believe this may be the culprit but I can't figure out how to fix these 3 vulnerabilities.

A possibility is that there's an issue with me having not moved my global packages to the newer version of node.

Any help is much appreciated.