GHSA-PGF8-2HGJ-GRQG

Vulnerability from github – Published: 2026-05-07 00:05 – Updated: 2026-05-14 20:32
VLAI
Summary
Vercel: Non-interactive mode includes CLI arguments in suggested command output
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 52.0.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "vercel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "50.16.0"
            },
            {
              "fixed": "52.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44479"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200",
      "CWE-532"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-07T00:05:20Z",
    "nvd_published_at": "2026-05-13T16:16:58Z",
    "severity": "MODERATE"
  },
  "details": "# Summary\n\nWhen 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.\n\n# Conditions\n\nAll three must be true for the token to appear in output:\n\n1. Token passed as a CLI argument (`--token` / `-t`). The `VERCEL_TOKEN` environment variable is **not affected**.\n2. Non-interactive mode is active (explicit flag or AI agent auto-detection).\n3. The command cannot complete on its own (e.g. missing `--yes`, ambiguous scope, API errors). Successful commands produce no suggestion output.\n\n## Impact\n\nThe plaintext token may be captured in CI/CD logs, agent transcripts, or other automation output.\n\n## Remediation\n\n- Upgrade to the patched version.\n- If developers have previously used `--token` with `--non-interactive` in their applications, review logs for exposed tokens and rotate them.\n- Prefer `VERCEL_TOKEN` environment variable for authentication.",
  "id": "GHSA-pgf8-2hgj-grqg",
  "modified": "2026-05-14T20:32:07Z",
  "published": "2026-05-07T00:05:20Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/vercel/vercel/security/advisories/GHSA-pgf8-2hgj-grqg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44479"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/vercel/vercel"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Vercel: Non-interactive mode includes CLI arguments in suggested command output"
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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