bun.sh/docs/install/audit.md

bun pm audit checks your installed packages for known security vulnerabilities.

Run the command in a project with a bun.lock file:

$ bun pm audit

Bun sends the list of installed packages and versions to NPM, and prints a report of any vulnerabilities that were found. Packages installed from registries other than the default registry are skipped.

If no vulnerabilities are found, the command prints:

No vulnerabilities found

When vulnerabilities are detected, each affected package is listed along with the severity, a short description and a link to the advisory. At the end of the report Bun prints a summary and hints for updating:

3 vulnerabilities (1 high, 2 moderate)
To update all dependencies to the latest compatible versions:
  bun update
To update all dependencies to the latest versions (including breaking changes):
  bun update --latest

--json

Use the --json flag to print the raw JSON response from the registry instead of the formatted report:

$ bun pm audit --json

Exit code

bun pm audit will exit with code 0 if no vulnerabilities are found and 1 if the report lists any vulnerabilities. This will still happen even if --json is passed.