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The 1st Codex-Security-Review: o-sumo

Security Review: o-sumo

背景

場所間を利用してCodex Security-Scanを用いてフルスキャンしてみた。

Versionは Codex-Security CLI 0.1.1

ModelはGPT-5.6-Sol High、時間は約40分。

Scope

The scan reviewed the canonical include paths and exclusions listed below.

  • Scan mode: repository
  • Target kind: git_worktree
  • Target ID: target_sha256_0ad2eeaf6bc2d71f7eff4b296604ce0c0315bb552b093dc16368f97c949844b0
  • Revision: 7e27af0e756666a67aa7901df74c30ac3786d1bc
  • Snapshot digest: codex-security-snapshot/v1:sha256:d749f81681dedb2d0e9504bc9222ae11328b31a2995b214a6a862a3c8aae2abf
  • Inventory strategy: repository
  • Included paths: .
  • Excluded paths: none
  • Runtime or test status: not recorded
  • Scan context: Whole-repository standard scan. All 309 in-scope files were reviewed. Fifteen candidates were validated; six received attack-path analysis; zero remained reportable.

Scan Summary

Field Value
Reportable findings 0
Severity mix none
Confidence mix none
Coverage complete
Validation mode not recorded

Canonical artifacts: scan-manifest.json, findings.json, and coverage.json. This report is a deterministic projection of those files.

Threat Model

Public read-only React and Vite static site on Cloudflare Pages with a static JSON API and privileged GitHub Actions that ingest fixed external data sources and publish generated content. The principal boundaries are browser-to-static-origin, generated data-to-rendering, external sources-to-generators, and write-enabled automation-to-repository publication.

Assets

  • Integrity and availability of the public site, routes, PWA, and static JSON API
  • Accuracy, provenance, freshness, and schema compatibility of published sumo data
  • Integrity of the main branch, automated update branches, and deployment output
  • GitHub Actions credentials, optional personal access token, and Discord webhook secret
  • User trust in official data, images, links, and third-party browser content

Trust Boundaries

  • Arbitrary browser requests to the Cloudflare Pages static origin
  • Generated repository data to React text, anchor, and image sinks
  • Fixed external sumo and news sources to privileged generators
  • GitHub Actions jobs to repository write and publication authority
  • Pull-request code, npm packages, GitHub Actions, and browser scripts to trusted execution contexts
  • Cloudflare deployment and service-worker caches to visitor clients

Attacker Capabilities

  • Internet users can control paths, route parameters, URL fragments, browser headers, and normal UI interactions
  • A compromised upstream can influence externally fetched HTML, JSON, URLs, and generated public content
  • Dependency or GitHub Action publishers can influence third-party code executed during builds and workflows
  • Maintainers and trusted automation operators control repository source, workflow dispatches, secrets, and deployment settings

Security Objectives

  • Keep public requests read-only and prevent access to repository writes, workflow state, secrets, or deployment authority
  • Render generated values only as data and constrain browser navigation and resource URLs to intended schemes and origins
  • Prevent external content from escaping generated files, altering executable source, or influencing shell commands
  • Constrain automation writes to documented paths and validate generated content before publication
  • Keep credentials out of generated files, logs, artifacts, browser bundles, and attacker-controlled requests
  • Preserve honest routing, API responses, cache recovery, and public data compatibility

Assumptions

  • The deployed application has no accounts, authenticated sessions, private user dataset, database, or browser-to-origin write API
  • Cloudflare Pages, GitHub, npm, Google script hosting, and fixed upstream HTTPS endpoints provide their documented platform isolation and transport security
  • Platform-wide compromise without a repository-controlled mitigation is out of scope, while repository-represented misconfiguration remains in scope
  • Local manually invoked utilities are developer surfaces unless a documented automated release path invokes them

Findings

No findings

No reportable findings survived the canonical discovery, validation, and reportability gates.

Reviewed Surfaces

Surface Risk Area Outcome Notes
Browser application and production runtime Browser trust boundaries, routes, generated data, external resources, PWA, and Cloudflare delivery Rejected Two candidates were validated; the malformed-fragment crash was suppressed and the production localhost script was rejected after attack-path analysis. Evidence: artifacts/03_coverage/runtime_receipt.md
Automated generators and repository publication workflows External data ingestion, validation, secrets, workflow permissions, direct pushes, and action supply chain Rejected Automation candidates were reproduced and traced, then rejected or suppressed because the remaining paths required trusted upstream, trusted publisher, or maintainer compromise without a lower-privileged in-scope entry path. Evidence: artifacts/03_coverage/automation_docs_receipt.md
Static API data and public assets Static JSON integrity, unsafe URLs, active content, media parsing, and content-type behavior Rejected All structured and binary assets were reviewed. The JPEG-in-PNG-name candidate was suppressed after browser and delivery validation showed no active-content impact. Evidence: artifacts/03_coverage/static_assets_receipt.md
npm dependency advisories Known vulnerabilities in build, development, routing, testing, and Cloudflare tooling dependencies Not applicable Five normalized advisory groups were checked against configured and reachable features; none produced an applicable product attack path at this revision. Evidence: artifacts/02_discovery/validation_artifacts/dependency-audit/npm-audit.json
Repository-wide inventory and review accounting Coverage completeness and deferred-work accounting No issue found All 309 in-scope files were assigned and reviewed; no file, surface, candidate, or question was deferred. Evidence: artifacts/03_coverage/reviewed_surfaces.md, artifacts/03_coverage/repository_coverage_ledger.md
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