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

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

5.5 · CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS

• CVE-2026-44479: 0.16% estimated exploitation activity in the next 30 days; percentile 5.25 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

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 VERCELTOKEN 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…

Published by the source

7 May 2026, 00:05 UTC

Last modified by the source

14 May 2026, 20:52 UTC

Source last checked

26 Oct 2026, 12:52 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-pgf8-2hgj-grqg

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-pgf8-2hgj-grqg

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# Patch Next advisory brief: CVE-2026-44479

Advisory: Vercel: Non-interactive mode includes CLI arguments in suggested command output
IDs: CVE-2026-44479, GHSA-pgf8-2hgj-grqg
Record: https://patchnext.com/advisories/cve-2026-44479 (revision 2, source checked 26 Oct 2026, 12:52 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: vercel 52.0.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm vercel: affected >= 50.16.0, <= 52.0.0; fixed in 52.0.1

## Suggested inspection (read-only)
- `npm ls vercel --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on vercel.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-pgf8-2hgj-grqg (OSV record GHSA-pgf8-2hgj-grqg lists affected ranges: npm vercel >=50.16.0 <52.0.1 (fixed))
- Verified: https://github.com/advisories/GHSA-pgf8-2hgj-grqg (GitHub-reviewed advisory GHSA-pgf8-2hgj-grqg lists affected ranges: npm vercel >=50.16.0 <=52.0.0)

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