Versioned security assessment

Report ID: SA-88A205C7

7/8/2026, 4:44:58 PM

web-design-guidelines security assessment v5

Skill Security Certification Report

Audit History
Audit model: codex Latest published report
Skill name
web-design-guidelines
Version
v1.0.0
Maintainer
ZhanlinCui
Source
github.com/ZhanlinCui/Ultimate-Agent-Skills-Collection/tree/main/vercel-web-design-guidelines
Coverage
1 Files scanned · 40 Lines analyzed
Policy version
Unavailable

Highest confirmed finding severity

Medium

1 confirmed security finding requires attention.

Installation context

Check the current Skill page

This page summarizes report evidence only. The Skill page provides the canonical install advisory.

Open current Skill page

This report does not block or authorize the manifest or ZIP.

The markdown backtick detections are false positives: they are inline formatting and a fenced URL block. The hardcoded WebFetch URL is confirmed as a low network risk, and the larger concern is reliance on mutable remote content as instructions.

Report position

Latest published report

Latest refers to the report sequence, not to artifact currentness.

Audit attestation

Not attestable

The required immutable binding is incomplete.

Human verification

Not verified

No human verification is recorded for this report.

Coverage

1 Files scanned · 40 Lines analyzed

2 items shown for review

Limitations

This report does not claim runtime or sandbox execution and does not prove the absence of side effects.

Evidence chain

Follow the evidence from source binding to the install contract. Available evidence supports verification; it is not a safety guarantee.

  1. Source

    Commit and path bound

  2. Artifact

    Content and tree hashes bound

  3. Audit

    Complete

  4. Install contract

    Open manifest to verify

    Open manifest

Capabilities observed

Observed means this report recorded supporting evidence. Not recorded does not prove that a capability is absent.

Contains scripts

May execute code included with the Skill.

Not recorded by this audit

Network access

May connect to external services.

Observed in 1 evidence location

Filesystem access

May read or write local files.

Not recorded by this audit

Env variables

May read values from the process environment.

Not recorded by this audit

External commands

May invoke commands or programs outside the Skill.

Observed in 2 evidence locations

Capability review items (1)
Low
SKILL.md:26
Hardcoded URL
https://raw.githubusercontent.com/vercel-labs/web-interface-guidelines/main/command.md
The skill instructs the agent to fetch a hardcoded raw GitHub URL before reviews. This intended network dependency can pull changed remote content and should be disclosed and controlled.

Risk findings

Confirmed security concerns are separated from items that still need review.

Confirmed security concerns (1)

RISK-001 Medium
SKILL.md:16-29
Remote Instruction Supply Chain
SKILL.md directs the agent to fetch remote guidelines and says the fetched content contains all rules and output format instructions. Treating mutable network content as instructions can change skill behavior after marketplace review.
The file explicitly requires fetching the URL and following rules from fetched content; the risk depends on future remote content but the delegation pattern is clear.

Remediation

Suggested fixes recorded by this audit. Applying them is the maintainer’s responsibility.

  1. FIX-001
    Medium
    Mutable remote guidelines are treated as instructions
    Pin the URL to a reviewed commit or vendor the guidelines into the skill package, then update through marketplace review.
  2. FIX-002
    Low
    Network fetch is required for each review
    Document the outbound request and ask before fetching, or provide an offline fallback for users who block network access.

Expert evidence

Immutable subject identity, scanner metadata, dismissed matches, and source-level evidence.

Artifact subject

Marketplace commit
88a205c7f635a966e31156313b590d59007c5caa
Content hash
f4647ca866a3accf763777f83e7682954f0187cd6bea7eea0399796652414e8f
Tree hash
812e3da496217b26003f53fe21b7a374711704682628926c68f364da68d06411
Skill path
skills/zhanlincui/web-design-guidelines
Audit payload hash
41aeacc7f8128797bf88e0d48ceac640

Analysis metadata

Audit model: codex

Analysis state: Complete

Scope is limited to the recorded files, lines, methods, and evidence. No runtime or sandbox execution is claimed.

Verify and export

JSON report CITATION.cff SARIF 2.1.0 Signed installation manifest Source

The manifest and lockfile bind install artifacts to cryptographic hashes. This integrity claim is separate from the security assessment.

Audit attestation: not_attestable