To fix issues identified by `yarn audit`, you typically follow a few steps. First, understand the report by looking at the severity of vulnerabilities and the packages involved. Run `yarn audit` to see the current vulnerabilities. To address them, consider upgrading vulnerable packages using `yarn upgrade ` for direct dependencies or `yarn upgrade @latest` for the latest version. If the issue is with a transitive dependency, you might need to use `yarn upgrade-interactive --latest` to selectively upgrade or override the version in your `package.json` using resolutions field, which forces the use of a specific version. Remember to test thoroughly after making changes as upgrades can break functionality. For vulnerabilities that cannot be resolved immediately, assess the risk, and until a fix is available, monitor the issue closely.

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