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Security audit

Vercel Platform

Security checks for vulnerabilities and agentic risk

Overview

This is a straightforward Vercel CLI reference skill, with expected but sensitive deployment, domain, and environment-variable commands that users should run carefully.

Install only if you want an agent to help administer Vercel projects. Before running commands that deploy to production, remove resources, change domains, buy or transfer domains, or pull environment variables, confirm the target project/team/environment and keep secret files like .env.local out of logs and version control.

A.I.G

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (6)

Credential Access

High
Category
Privilege Escalation
Confidence
94% confidence
Finding

Documenting 'vercel env pull' into .env.local exposes a concrete path for retrieving and materializing secrets locally, but the skill provides no warning about secret sensitivity, file permissions, or accidental source control inclusion. In a coding-agent context, this can directly facilitate credential access and downstream leakage through logs, patches, or repository commits.

Content

Scanner excerpt · SKILL.md (reported line 125)May include surrounding context.

vercel env list [environment] # list env vars vercel env add [environment] # add env var vercel env remove [environment] # remove env var vercel env pull [filename] # pull to .env.local

text

**Environments:** `development`, `preview`, `production`

Credential Access

High
Category
Privilege Escalation
Confidence
95% confidence
Finding

The explicit example 'vercel env pull .env.local' operationalizes secret retrieval and local storage without any safeguard language. This is especially risky for an agent skill because it may normalize secret extraction into a common workflow and increase the likelihood of exposing production credentials during automated assistance.

Content

Scanner excerpt · SKILL.md (reported line 134)May include surrounding context.

bash
vercel env list production
vercel env add DATABASE_URL production
vercel env pull .env.local

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
85% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 49)May include surrounding context.

  • --prebuilt - Deploy prebuilt output (use with vercel build)
  • --force - Force new deployment even if unchanged
  • --no-wait - Don't wait for deployment to finish
  • -y, --yes - Skip prompts, use defaults

Examples:

bash

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
85% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 88)May include surrounding context.

  • --prebuilt - Deploy prebuilt output (use with vercel build)
  • --force - Force new deployment even if unchanged
  • --no-wait - Don't wait for deployment to finish
  • -y, --yes - Skip prompts, use defaults

Examples:

bash

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The skill documents destructive and production-impacting Vercel operations such as removing deployments, rolling back, promoting to production, deleting domains, and transferring domains without any explicit warning, confirmation guidance, or advice to verify scope and environment first. In an agent context, this increases the chance that a model may execute irreversible or service-affecting commands on behalf of a user without sufficiently highlighting operational risk.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The skill includes commands for handling environment variables and authentication tokens, including pulling secrets into local files, but does not warn that these values are sensitive or that command history, logs, or generated files may expose them. In an agent-operated setting, omission of secret-handling guidance can lead to accidental credential disclosure or unsafe storage.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.