🛡️ Sentinel: [HIGH] projectId 경로 탐색(Path Traversal) 취약점 수정 by seonghobae · Pull Request #703 · ContextualWisdomLab/bandscope

seonghobae · 2026-07-27T04:12:34Z

🚨 심각도: HIGH
💡 취약점: projectId API 페이로드를 검증하지 않아 디렉토리 경로 검색 (Path Traversal) 공격에 취약했습니다.
🎯 영향: 공격자가 projectId를 조작하여 (.., /, \ 포함) 의도하지 않은 로컬 파일 시스템 경로에 접근할 수 있었습니다.
🔧 해결책: validate_analysis_job_request에 명시적인 검증 로직을 추가하여 ., .. 일치 및 /, \ 포함을 차단하고 보안 경고 로그를 남기도록 수정했습니다. project..1과 같이 내부 점(dot)을 포함한 정상 식별자는 허용됩니다.
✅ 검증: test_api.py에 악의적인 페이로드를 거부하고 정상 페이로드를 허용하는 단위 테스트를 추가하고 통과를 확인했습니다.

PR created automatically by Jules for task 13767768366505933146 started by @seonghobae

google-labs-jules · 2026-07-27T04:12:35Z

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📒 Files selected for processing (4)

.jules/sentinel.md
services/analysis-engine/pyproject.toml
services/analysis-engine/src/bandscope_analysis/api.py
services/analysis-engine/tests/test_api.py

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Commit unit tests in branch fix-project-id-path-traversal-13767768366505933146

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Copilot

Pull request overview

This PR hardens the analysis-engine API boundary by rejecting path traversal attempts via projectId in validate_analysis_job_request, and expands unit tests to cover allowed/blocked projectId shapes. It also records the learning in the Jules Sentinel log.

Changes:

Add explicit projectId path-traversal validation (block ., .., /, \) with a security warning log.
Add unit tests to ensure interior-dot identifiers (e.g. project..1) are accepted and obvious traversal payloads are rejected.
Add a Sentinel log entry documenting the vulnerability and prevention guidance.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
services/analysis-engine/src/bandscope_analysis/api.py	Adds `projectId` traversal guard + warning log inside request validation.
services/analysis-engine/tests/test_api.py	Adds acceptance test for interior dots and new rejection cases for traversal-shaped `projectId`.
.jules/sentinel.md	Documents the vulnerability/prevention guidance in the Sentinel log.

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+def test_validate_analysis_job_request_accepts_interior_dots() -> None:
+    """Ensure valid local-audio requests with interior dots in projectId are normalized."""


+        (
+            {
+                "sourceKind": "local_audio",
+                "projectId": "..",
+                "sourceLabel": "Late Night Set",
+                "roleFocus": [],
+                "localSource": {
+                    "sourcePath": "/Users/test/Music/late-night-set.wav",
+                    "fileName": "late-night-set.wav",
+                    "extension": "wav",
+                    "fileSizeBytes": 1024000,
+                },
+            },
+            "path traversal",
+        ),


+## 2026-07-03 - Project ID API Validation
+**Vulnerability:** Similar to the previous entry, the `projectId` provided via the API payload was not explicitly validated against path traversal before being used in path concatenations.
+**Learning:** Any identifier (such as `projectId`) provided via API payloads that eventually reaches a filesystem path join must be treated as untrusted.
+**Prevention:** Apply explicit path traversal protections by rejecting exact string matches for `.` and `..`, as well as any path separators `/` and `\`, but allow normal identifiers with interior dots (e.g., `my..id`) to pass validation safely. Always log security warnings when invalid access attempts are detected.


Copilot

Pull request overview

Copilot reviewed 3 out of 4 changed files in this pull request and generated no new comments.

Comments suppressed due to low confidence (2)

services/analysis-engine/tests/test_api.py:87

Docstring says the request is "normalized", but this test asserts the payload is returned unchanged. Update the wording to avoid implying mutation/normalization that doesn't occur.

    """Ensure valid local-audio requests with interior dots in projectId are normalized."""

services/analysis-engine/tests/test_api.py:167

The validator now rejects projectId == "." as well as "..", but the reject-cases only cover "..". Adding a "." case helps keep branch coverage aligned with the engine’s 100% coverage gate.

        (
            {
                "sourceKind": "local_audio",
                "projectId": "..",
                "sourceLabel": "Late Night Set",

Copilot

Pull request overview

Copilot reviewed 4 out of 6 changed files in this pull request and generated 1 comment.

Comments suppressed due to low confidence (2)

services/analysis-engine/tests/test_api.py:88

The test docstring says the request is "normalized", but this validator call is only asserting acceptance (the output equals the input). This is misleading when reading the test intent.

def test_validate_analysis_job_request_accepts_interior_dots() -> None:
    """Ensure valid local-audio requests with interior dots in projectId are normalized."""
    assert validate_analysis_job_request(

services/analysis-engine/pyproject.toml:16

setuptools is being added as a runtime dependency, but there are no imports/usages of setuptools in the engine code/tests. Declaring it as a direct dependency expands the public dependency contract without an obvious need; if this is only needed for packaging/build tooling, it should live under [build-system] instead.

    "numpy>=1.26",
    "setuptools>=82.0.0",
    "soundfile>=0.13.1",

    "numpy>=1.26",
+    "setuptools>=82.0.0",
    "soundfile>=0.13.1",
-            "urllib3>=2.7.0",
-    "yt-dlp>=2026.6.9",
+    "urllib3>=2.7.0",
+    "yt-dlp>=2026.7.0",


seonghobae · 2026-07-31T12:51:39Z

Closing as closed-duplicate/superseded (path-traversal cluster) by autonomous product-completion loop.

Winner / disposition target: #727

Unique value from this cluster is consolidated there (projectId path guard + npm HIGH CVE pins + Foote novelty kernel sign). Remaining micro-duplicates do not land additional commercial readiness.

seonghobae · 2026-07-31T12:51:40Z

closed-closed-duplicate/superseded (path-traversal cluster) → #727

google-labs-jules · 2026-07-31T12:54:11Z

Closing as closed-duplicate/superseded (path-traversal cluster) by autonomous product-completion loop.

Winner / disposition target: #727

Unique value from this cluster is consolidated there (projectId path guard + npm HIGH CVE pins + Foote novelty kernel sign). Remaining micro-duplicates do not land additional commercial readiness.

Understood. Acknowledging that this work is now obsolete and superseded by PR #727, and stopping work on this task.

google-labs-jules · 2026-07-31T12:54:12Z

closed-closed-duplicate/superseded (path-traversal cluster) → #727

Acknowledged.

Fix project ID path traversal in analysis engine API

890a940

Copilot AI review requested due to automatic review settings July 27, 2026 04:12

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Fix project ID path traversal in analysis engine API

b2e1ba6

Copilot AI review requested due to automatic review settings July 27, 2026 04:17

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Fix project ID path traversal in analysis engine API

00b24b5

Copilot AI review requested due to automatic review settings July 27, 2026 04:28

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Comment thread services/analysis-engine/pyproject.toml

Comment on lines 14 to +18

"numpy>=1.26",

"setuptools>=82.0.0",

"soundfile>=0.13.1",

"urllib3>=2.7.0",

"yt-dlp>=2026.6.9",

"urllib3>=2.7.0",

"yt-dlp>=2026.7.0",

seonghobae mentioned this pull request Jul 31, 2026

fix(security): projectId path guard, npm HIGH CVEs, Foote novelty sign #727

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3 tasks

seonghobae closed this Jul 31, 2026

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🛡️ Sentinel: [HIGH] projectId 경로 탐색(Path Traversal) 취약점 수정 - #703

🛡️ Sentinel: [HIGH] projectId 경로 탐색(Path Traversal) 취약점 수정#703
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		def test_validate_analysis_job_request_accepts_interior_dots() -> None:
		"""Ensure valid local-audio requests with interior dots in projectId are normalized."""

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