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MEDIUM5.5

GHSA-pgf8-2hgj-grqg

Vercel: Non-interactive mode includes CLI arguments in suggested command output

Quick fix

GHSA-pgf8-2hgj-grqg — vercel: upgrade to the fixed version with the command below.

npm install vercel@52.0.1

Details

# Summary

When the Vercel CLI runs in non-interactive mode (`--non-interactive` or auto-detected AI agent), commands that cannot complete autonomously emit JSON payloads with suggested follow-up commands. If the user authenticated via `--token` or `-t` on the command line, the token value is included verbatim in those suggestions.

# Conditions

All three must be true for the token to appear in output:

1. Token passed as a CLI argument (`--token` / `-t`). The `VERCEL_TOKEN` environment variable is **not affected**. 2. Non-interactive mode is active (explicit flag or AI agent auto-detection). 3. The command cannot complete on its own (e.g. missing `--yes`, ambiguous scope, API errors). Successful commands produce no suggestion output.

## Impact

The plaintext token may be captured in CI/CD logs, agent transcripts, or other automation output.

## Remediation

- Upgrade to the patched version. - If developers have previously used `--token` with `--non-interactive` in their applications, review logs for exposed tokens and rotate them. - Prefer `VERCEL_TOKEN` environment variable for authentication.

Are you affected?

Enter the version of the package you're using.

Affected packages

npm/vercel
Introduced in: 50.16.0Fixed in: 52.0.1
Fixnpm install vercel@52.0.1

References