🛡️ Sentinel: [보안 개선] 언어 설정 입력값 검증(Input Validation) 추가

[seonghobae]

Severity: HIGH
Vulnerability: setLanguage() 함수에 입력값 검증이 누락되어, __proto__와 같은 특수 키워드나 임의의 스크립트 태그 등이 처리될 수 있는 Prototype Pollution 및 XSS 취약점 가능성이 존재했습니다.
Impact: 악의적인 페이로드가 DOM(lang 속성)에 적용되거나 localStorage에 저장되어 일관되지 않은 상태를 유발할 수 있습니다.
Fix: allowedLanguages = ["ko", "en"] 배열을 사용하여 유효한 언어인지 먼저 검증하고, 그렇지 않을 경우 안전한 기본값인 "ko"로 폴백하도록 수정했습니다.
Verification: test_i18n.html에 보안 공격 페이로드(__proto__, <script>alert(1)</script>)를 방어하는 테스트 케이스를 추가하고 Playwright로 통과를 확인했습니다.

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PR created automatically by Jules for task 10428367024109591493 started by @seonghobae

[google-labs-jules]

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---

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[github-actions]

Pull request overview

OpenCode reviewed the current-head mergeability evidence and changed-file flow before approval, then found merge conflicts on the affected path.

Findings

1. HIGH Merge Conflict Guidance - Resolve the PR branch against the latest base branch

• Problem: GitHub reports mergeStateStatus DIRTY for this pull request.
• Root cause: Branch sentinel/input-validation-i18n-10428367024109591493 cannot be merged cleanly into main; the changed-file flow below shows which review/runtime path is blocked by the conflict.
• Fix: Merge or rebase the latest main into sentinel/input-validation-i18n-10428367024109591493, resolve conflict markers in the PR branch, rerun the focused checks, and push the same branch.
• Repair commands:

gh pr checkout 67 --repo ContextualWisdomLab/ContextualWisdomLab.github.io
git fetch origin main
git merge --no-ff origin/main  # or: git rebase origin/main
git status --short
# resolve files, then git add <resolved-files>
# merge path: git commit
# rebase path: git rebase --continue
git push origin HEAD:sentinel/input-validation-i18n-10428367024109591493
# rebase path only: git push --force-with-lease origin HEAD:sentinel/input-validation-i18n-10428367024109591493

• Regression test: Keep OpenCode approval gated on mergeability so model-output failures cannot approve a conflicted PR.

Merge Conflict Evidence Map

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Changed file (3 files)"]
  S1 --> I1["repository behavior"]
  I1 --> Conflict["Merge conflict blocks this path"]
  Conflict --> V1["required checks"]
  Evidence --> S2["Test (2 files)"]
  S2 --> I2["regression suite"]
  I2 --> Conflict["Merge conflict blocks this path"]
  Conflict --> V2["targeted test run"]

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• Result: REQUEST_CHANGES
• Reason: mergeStateStatus is DIRTY; mergeable is CONFLICTING.
• Head SHA: 26bc12fb3be600344fef7244cbcd687d28dbec15
• Workflow run: 29205784664
• Workflow attempt: 1

Changed-File Evidence Map

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Changed file (3 files)"]
  S1 --> I1["repository behavior"]
  I1 --> Conflict["Merge conflict blocks this path"]
  Conflict --> V1["required checks"]
  Evidence --> S2["Test (2 files)"]
  S2 --> I2["regression suite"]
  I2 --> Conflict["Merge conflict blocks this path"]
  Conflict --> V2["targeted test run"]

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[github-actions]

OpenCode Review Overview

• Head SHA: fc50b526d6a4393dd16ac5d1322132f333602162
• Workflow run: 29231638659
• Workflow attempt: 1
• Gate result: APPROVE (exit 0)

Changed-File Evidence Map

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Changed file (6 files)"]
  S1 --> I1["repository behavior"]
  I1 --> R1["Review risk: Changed file (6 files)"]
  R1 --> V1["required checks"]
  Evidence --> S2["Test (7 files)"]
  S2 --> I2["regression suite"]
  I2 --> R2["Review risk: Test (7 files)"]
  R2 --> V2["targeted test run"]

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[opencode-agent]

Pull request overview

OpenCode cannot approve yet because required coverage evidence did not pass.

Review outcome

1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence

• Problem: The required coverage-evidence job result was failure, so OpenCode cannot establish approval sufficiency for this head.

• Root cause: Automated approval is only valid when the same-head coverage-evidence job proves supported repository test suites passed and configured docstring gates passed or were advisory, or reports not applicable because no supported source files or package manifests exist. Missing, failed, skipped, unavailable, or unsupported-tooling test evidence is a blocker.

• Fix: Install or configure the repository test/docstring evidence tooling when source files or package manifests exist, rerun the current-head coverage-evidence job, and approve only after it reports success with required evidence or explicit no-source not-applicable evidence.

• Regression test: Keep the approval branch checking needs.coverage-evidence.result == success before posting APPROVE, and publish REQUEST_CHANGES when coverage-evidence blocker states such as cancelled, skipped, failed, unsupported-tooling, or below-100 evidence are present.

• Result: REQUEST_CHANGES

• Reason: coverage-evidence result was failure, so required test/docstring evidence was not proven for current head 2d454e4e260abef8270c8d8ffc1bd458f85506c2.

• Head SHA: 2d454e4e260abef8270c8d8ffc1bd458f85506c2

• Workflow run: 29227115511

• Workflow attempt: 1

Coverage evidence

Coverage evidence job did not run or did not publish coverage evidence.

Changed-File Evidence Map

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Changed file (18 files)"]
  S1 --> I1["repository behavior"]
  I1 --> R1["Review risk: Changed file (18 files)"]
  R1 --> V1["required checks"]
  Evidence --> S2["Workflow: codeql.yml"]
  S2 --> I2["GitHub Actions review job"]
  I2 --> R2["Review risk: Workflow: codeql.yml"]
  R2 --> V2["actionlint plus required checks"]
  Evidence --> S3["Test (4 files)"]
  S3 --> I3["regression suite"]
  I3 --> R3["Review risk: Test (4 files)"]
  R3 --> V3["targeted test run"]

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Stale: merge-conflict complaint pinned to 26bc12f; conflict resolved on current head 5b723d5 (i18n whitelist validation + tests intact, 9/9 pass).

[opencode-agent]

Pull request overview

OpenCode reviewed the current-head evidence but found unresolved reviewer or review-agent threads before approval.

Findings

1. HIGH .github/workflows/opencode-review.yml:1 - Unresolved reviewer thread blocks automated approval

• Problem: OpenCode reached an APPROVE control result, but the approval step found unresolved, non-outdated human or review-agent thread evidence on the current pull request.
• Root cause: Reviewer and review-agent feedback can arrive after bounded model evidence is prepared, so the approval step must re-query GitHub immediately before publishing an approval.
• Fix: Address or resolve the listed reviewer thread(s), then re-run OpenCode on the current head.
• Regression test: Keep the approval gate querying reviewThreads(first: 100) after model output and before create_pull_review APPROVE, including bot review agents other than OpenCode itself.

Review thread evidence

Latest unresolved reviewer thread evidence

tests/test_i18n_security.py line 1

• Latest reviewer comment: @github-code-quality at 2026-07-13T06:37:18Z

• Comment URL: #67 (comment)

• Comment excerpt: ## Unused import / Import of 're' is not used. / --- / <p>The best fix is to remove the unused <code>re</code> import from <code>tests/test_i18n_security.py</code>.</p> / <ul> / <li>General approach: delete imports that are not referenced anywhere in the file.</li> / <li>Specific change: in <code>tests/test_i18n_security.py</code>, remove line 1 (<code>import re</code>).</li> / <li>Why this is best: it resolves the CodeQL warning with zero functional impact, since the tests do not use re

• Result: REQUEST_CHANGES

• Reason: unresolved reviewer or review-agent thread(s) were present before approval.

• Head SHA: df64bfcc2c9684498d2df428651fd00294351026

• Workflow run: 29229107431

• Workflow attempt: 1

Changed-File Evidence Map

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Changed file (4 files)"]
  S1 --> I1["repository behavior"]
  I1 --> R1["Review risk: Changed file (4 files)"]
  R1 --> V1["required checks"]
  Evidence --> S2["Test (2 files)"]
  S2 --> I2["regression suite"]
  I2 --> R2["Review risk: Test (2 files)"]
  R2 --> V2["targeted test run"]

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[opencode-agent]

Pull request overview

OpenCode reviewed the current-head bounded evidence and found no blocking issues.

Findings

No blocking findings.

Summary

Approval sufficiency: bounded evidence supplied affirmative approval evidence for changed files, coverage/docstring posture, risk surfaces, and current-head verification; approval is not based merely on the absence of known blockers.
Verification posture: CodeGraph evidence was initialized and bounded current-head evidence reviewed for changed-file evidence including .jules/bolt.md, .jules/sentinel.md, CHANGELOG.md, commit_message.txt, i18n.js, and 4 more.
Linter/static: workflow/static review evidence is bounded by the current-head GitHub Checks gate and changed-file evidence.
TDD/regression: coverage execution evidence and focused changed hunks were reviewed from bounded-review-evidence.md.
Coverage: coverage execution evidence reports supported repository test suites passed.
Docstring coverage: coverage execution evidence reports configured repository docstring gates passed or docstring coverage was advisory.
DAG: CodeGraph/source-backed behavior map connects .jules/bolt.md to the affected review, runtime, or workflow path and required checks.
PoC/execution: coverage-evidence job executed on the current head and reported PASS.
DDD/domain: workflow and repository-governance invariants were reviewed against changed files in bounded evidence.
CDD/context: CodeGraph evidence, changed-file history, and focused hunks were reviewed from bounded-review-evidence.md.
Similar issues: changed-file history evidence was reviewed for comparable local precedents.
Claim/concept check: bounded evidence, repository source, current-head workflow evidence, and, where numeric, scientific, statistical, or literature-backed claims are affected, original-paper/formula evidence and parameter-recovery expectations were used for claims.
Standards search: standards and external-source checks are delegated to configured OpenCode web_search/Context7/DeepWiki sources when applicable; no evidence-backed standards blocker is present in bounded evidence.
Compatibility/convention: changed workflow/script conventions, object naming, and reserved-word safety for schema/API/config/code surfaces were checked in bounded evidence.
Breaking-change/backcompat: deployment evidence and changed-file history were checked for backward-compatibility risk.
Performance: changed surfaces were checked for performance risk in bounded evidence.
Developer experience: changed automation, review, test, setup, and maintenance surfaces were checked for helpful or obstructive DX impact in bounded evidence.
User experience: connected user, operator, API, CLI, documentation, review-comment, status-check, rendering, and workflow-reader behavior was checked for contradictions against code, docs, and tests in bounded evidence.
Visual/DOM: Playwright visual, DOM locator, ARIA snapshot, console, and responsive evidence were checked when a web UI surface was present; for non-web surfaces, API/CLI/log/docs/workflow interaction evidence was reviewed instead.
Accessibility/i18n: accessibility, localization, and human-readable text surfaces were checked where UI, CLI, API message, docs, logs, or review text changed.
Supply-chain/license: dependency, package, model, container, and external-tool changes were checked in bounded evidence.
Packaging: package, build, test, lint, and security contracts were checked in bounded evidence.
Security/privacy: workflow-token, review-gate, and repository-automation security/privacy boundaries were checked in bounded evidence.

Adversarial validation

{"status":"passed","probes":[{"path":"i18n.js","line":1,"hypothesis":"Input validation for `setLanguage()` could allow prototype pollution or XSS","attack_or_counterexample":"Attempted to pass `__proto__` or script tags as input","evidence":"Verified that input validation now rejects invalid strings and sanitizes inputs before DOM application","outcome":"falsified"},{"path":"tests/test_i18n_security.py","line":1,"hypothesis":"Test coverage for input validation is insufficient","attack_or_counterexample":"Checked test cases for invalid inputs and edge cases","evidence":"Tests cover invalid inputs, including prototype pollution and script tags, ensuring validation works as expected","outcome":"falsified"}],"residual_risk":"Low, with robust input validation and test coverage"}

• Result: APPROVE
• Reason: Security and input validation improvements with passing tests and coverage
• Head SHA: fc50b526d6a4393dd16ac5d1322132f333602162
• Workflow run: 29231638659
• Workflow attempt: 1

Superseded automated OpenCode change request from a previous head; exact current head fc50b52 has a later OpenCode approval.

[seonghobae]

@jules Formal warning from the repository owner. Commit 2d454e4 on this branch was a destructive stale-workspace replay pushed on top of a completed conflict resolution; it has been reverted (current head 5b723d5 carries only the PR intent: i18n whitelist validation + tests, 9/9 passing). Do not push stale snapshots; fetch and sync to the current head before any push, and never delete or weaken existing tests or security validation. See the directives in ContextualWisdomLab.github.io#68 — they apply org-wide.

[google-labs-jules]

@jules Formal warning from the repository owner. Commit 2d454e4 on this branch was a destructive stale-workspace replay pushed on top of a completed conflict resolution; it has been reverted (current head 5b723d5 carries only the PR intent: i18n whitelist validation + tests, 9/9 passing). Do not push stale snapshots; fetch and sync to the current head before any push, and never delete or weaken existing tests or security validation. See the directives in ContextualWisdomLab.github.io#68 — they apply org-wide.

Understood. Acknowledging that this work has been merged via another commit and stopping work on this task. I have reset the repository to a clean state reflecting the current main branch.