Versioned security assessment

Report ID: SA-483A89F4

7/5/2026, 6:20:36 AM

react-native-best-practices security assessment v3

Skill Security Certification Report

Audit History

Audit model: codex Historical report

Skill name: react-native-best-practices
Version: v3
Maintainer: callstackincubator
Source: github.com/callstackincubator/agent-skills/tree/main/skills/react-native-best-practices/
Coverage: 29 Files scanned · 6,499 Lines analyzed
Policy version: Unavailable

Highest confirmed finding severity

Critical

3 confirmed security findings require attention.

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.

Most static hits are false positives from Markdown examples, React Native documentation, local Gradle or grep commands, and benign PNG screenshots. Two curl-to-bash installer examples are confirmed critical because they execute a remote script, and the remote code loading guide adds a supply-chain concern without integrity controls. No prompt injection text was found in the reviewed files.

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

29 Files scanned · 6,499 Lines analyzed

8 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.

Source

Binding unavailable
Artifact

Identity incomplete
Audit

Complete
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.

Observed in 7 evidence locations

Network access

May connect to external services.

Observed in 6 evidence locations

Filesystem access

May read or write local files.

Observed in 11 evidence locations

Env variables

May read values from the process environment.

Observed in 1 evidence location

External commands

May invoke commands or programs outside the Skill.

Observed in 63 evidence locations

Capability review items (5)

High

references/js-measure-fps.md:18

Hardcoded URL

curl https://get.flashlight.dev | bash

The URL is used as the source for a curl-to-bash installer. The external network dependency becomes code execution if the endpoint is compromised.

High

references/js-measure-fps.md:76

Hardcoded URL

curl https://get.flashlight.dev | bash

The URL is used as the source for a curl-to-bash installer. The external network dependency becomes code execution if the endpoint is compromised.

Medium

references/bundle-code-splitting.md:148

Dynamic import() expression

import('remote-app/Module')

The example imports a module from a remote-app namespace in a remote code loading guide. This can execute code supplied outside the shipped app bundle.

Medium

references/bundle-code-splitting.md:95

Hardcoded URL

: `https://my-cdn.com/assets/${scriptId}`, // Production CDN

The hardcoded URL is part of production remote chunk loading. Without integrity controls, it can fetch executable app code from a CDN.

Medium

references/bundle-code-splitting.md:170

Hardcoded URL

url: `https://my-cdn.com/${scriptId}`,

The hardcoded URL is part of production remote chunk loading. Without integrity controls, it can fetch executable app code from a CDN.

Risk findings

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

Confirmed security concerns (3)

RISK-001 Critical

references/js-measure-fps.md:18

Pipe to shell pattern

curl https://get.flashlight.dev | bash

The snippet pipes a remote installer from get.flashlight.dev directly into bash. This executes unaudited network content on the user machine.

RISK-002 Critical

references/js-measure-fps.md:76

Pipe to shell pattern

curl https://get.flashlight.dev | bash

The snippet pipes a remote installer from get.flashlight.dev directly into bash. This executes unaudited network content on the user machine.

RISK-003 High

references/bundle-code-splitting.md:86-96 references/bundle-code-splitting.md:141-149 references/bundle-code-splitting.md:166-176

Remote Code Loading Lacks Integrity Guidance

references/bundle-code-splitting.md presents production CDN chunk loading and module federation without signing, integrity, or allowlist guidance. A compromised CDN or remote module could execute untrusted JavaScript inside the app.

The file is explicitly about remote code loading and shows CDN chunk resolution plus module federation. The risk is contextual because the guide lacks trust, signing, or integrity controls.

Remediation

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

FIX-001
Critical
Remote installer is piped directly into bash.

Replace curl-to-bash instructions with a package manager install, a signed release download, or checksum verification before execution.
FIX-002
High
Remote code loading examples lack trust controls.

Add guidance for signed chunks, integrity validation, allowlisted hosts, rollback controls, and App Store or Play policy review.
FIX-003
Medium
Local shell commands are presented without execution safeguards.

State that commands should run only with user approval in the project root, and explain what files or build outputs they change.
FIX-004
Low
Binary screenshots require manual review during marketplace audits.

Keep images as simple documentation assets, strip unnecessary metadata, and avoid embedding instructions or secrets in screenshots.

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)

Critical

references/js-concurrent-react.md:13

Keylogger keywords

**Incorrect (blocks input on every keystroke):**

Force-confirmed blocker/critical static finding; AI dismissal overridden.

Critical

references/js-concurrent-react.md:164

Keylogger keywords

<SlowComponent query={query} /> {/* Blocks every keystroke */}

Force-confirmed blocker/critical static finding; AI dismissal overridden.

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