[Snyk] Fix for 1 vulnerable dependencies

[snyk-bot]

Description

This PR fixes one or more vulnerable packages in the yarn dependencies of this project.
See the Snyk test report for more details.

Snyk Project: postgraphql/postgraphql:package.json

Snyk Organization: benjie

Lockfile

If you are using package-lock.json or yarn.lock, please re-lock your dependencies and push an updated lockfile before merging this PR.

Changes included in this PR

• A Snyk policy (.snyk) file, with updated settings.

Vulnerabilities that will be fixed

With a Snyk patch:

• SNYK-JS-LODASH-450202

You can read more about Snyk's upgrade and patch logic in Snyk's documentation.

Check the changes in this PR to ensure they won't cause issues with your project.

Stay secure,
The Snyk team

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[benjie]

Snyk has detected a prototype pollution vulnerability in the defaultsDeep method within the lodash package (a package that contains hundreds of utility methods for working with JavaScript). This could potentially be a very dangerous vulnerability if a remote attacker were able to exploit it. PostGraphile, along with roughly 4.3 million other projects, uses this package. The vulnerability has been fixed in lodash master but a new release of lodash is still pending.

I've searched our codebase and dependencies (with a recursive grep) for any mention of defaultsDeep, and the only hits were in the lodash package itself. Further, I've reviewed these hits within the lodash package, they are either the actual function itself, re-exports of the function, or comments referencing the function - no other lodash method seems to call defaultsDeep. I did not check the lodash/fp files as we do not use this, but I expect the results there will be similar. Therefore I believe PostGraphile to be UNAFFECTED by this vulnerability.

If you are concerned, I recommend that you use the snyk CLI to patch the issue in your applications.

More details can be found here:

https://snyk.io/vuln/SNYK-JS-LODASH-450202

[benjie]

Fixed in 8f70cfa