In short
- CVE-2026-44479 is a MEDIUM (CVSS 5.5) vulnerability affecting vercel (vercel), vercel.
- Chance of exploitation in the next 30 days (EPSS): 0.16%, higher than 5.2% of all vulnerabilities.
- Fix: update to 52.0.1 or later.
| Package | Affected versions | Patched versions |
|---|
| vercel | ≥ 50.16.0, < 52.0.1
| 52.0.1
|
| vercel npm | ≥ 50.16.0, < 52.0.1
| 52.0.1
|
Description
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:
- Token passed as a CLI argument (
--token / -t). The VERCEL_TOKEN environment variable is not affected.
- Non-interactive mode is active (explicit flag or AI agent auto-detection).
- 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.
NVD description
Vercel’s AI Cloud is a unified platform for building modern applications. From 50.16.0 to 52.0.0, hen 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. The plaintext token may be captured in CI/CD logs, agent transcripts, or other automation output. This vulnerability is fixed in 52.0.1.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free