Versioned security assessment

Report ID: SA-A6673349

7/1/2026, 2:44:11 AM

web-design-guidelines security assessment v2

Skill Security Certification Report

Audit History
Audit model: codex Historical report
Skill name
web-design-guidelines
Version
v2
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

Confirmed finding summary

No confirmed security findings

The completed audit recorded no confirmed security findings. This is not proof that the Skill has no side effects.

Installation context

Historical evidence

This report may not describe the currently installable artifact. Open the current Skill page for install guidance.

Open current Skill page

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

Static shell-execution and weak-cryptography findings are false positives from markdown text in SKILL.md. The confirmed concern is that the skill requires fetching mutable external guideline instructions from GitHub before each review. This creates a moderate supply-chain and prompt-injection risk if the remote content changes or is compromised.

Report position

Historical report

Open audit history before using this report to install.

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

1 item 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

    Binding unavailable

  2. Artifact

    Identity incomplete

  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 3 evidence locations

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.

Not recorded by this audit

Capability review items (1)
Medium
SKILL.md:26SKILL.md:29SKILL.md:34-37
Mutable External Guideline Instructions
The skill instructs agents to fetch fresh rules from a GitHub raw URL and apply the fetched output instructions. This is not confirmed malicious, but remote mutable instructions can change after review and influence agent behavior.
The file explicitly requires WebFetch from a mutable URL and tells the agent to use fetched instructions. No evidence shows data exfiltration or malicious content in the local skill file.

Risk findings

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

No confirmed security findings were recorded for this completed audit.

Expert evidence

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

Artifact subject

Marketplace commit
Unavailable
Content hash
Unavailable
Tree hash
Unavailable
Skill path
Unavailable
Audit payload hash
Unavailable

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.

Static false positives ignored (2)
Low
SKILL.md:19SKILL.md:25-27
False Positive: Markdown Backticks Flagged as Shell Execution
The static analyzer flagged backtick text and a fenced URL block as Ruby or shell execution. These lines are markdown formatting and do not execute commands inside the skill file.
The flagged content appears inside markdown prose and a fenced code block. There is no script file, interpreter directive, or executable command invocation.
Low
SKILL.md:2-3SKILL.md:33
False Positive: Weak Cryptography Pattern Match
The static analyzer flagged weak cryptography on metadata and usage prose lines. No cryptographic algorithm, hashing call, or security-sensitive crypto use appears on those lines.
The cited lines contain front matter and usage text only. I found no evidence of MD5, SHA1, DES, RC4, or related cryptographic operations in SKILL.md.

Verify and export

JSON report CITATION.cff SARIF 2.1.0 Signed installation manifest

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

Audit attestation: not_attestable