🛡️ Sentinel: [CRITICAL/HIGH] projectId 경로 조작(Path Traversal) 취약점 수정 by seonghobae · Pull Request #696 · ContextualWisdomLab/bandscope

seonghobae · 2026-07-25T04:07:37Z

🚨 Severity: CRITICAL/HIGH
💡 Vulnerability: API 요청에서 전달받는 projectId가 경로 조작에 취약한 상태였습니다. . 이나 .., /, \ 등의 값을 통해 파일시스템 경로에 개입할 수 있는 위험이 있었습니다.
🎯 Impact: 공격자가 임의의 경로를 생성하여 서버 파일 시스템에 접근하거나 쓰기를 수행할 가능성이 존재했습니다.
🔧 Fix: services/analysis-engine/src/bandscope_analysis/api.py 내의 validate_analysis_job_request에 명시적인 검증 로직을 추가했습니다. projectId가 . 또는 ..인 경우나 디렉토리 구분자(/, \)를 포함한 경우 차단하도록 변경하였고, 유효한 식별자(예: my..id)는 통과하도록 처리했습니다.
✅ Verification: uv run pytest 및 quickcheck.sh 테스트를 모두 통과했습니다.

PR created automatically by Jules for task 5899358760909572075 started by @seonghobae

google-labs-jules · 2026-07-25T04:07:38Z

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Copilot

Pull request overview

This PR strengthens analysis-engine request validation by adding explicit projectId path-traversal guards in the Python API boundary, and extends unit coverage to ensure safe failures for traversal-like IDs while still allowing benign identifiers containing ...

Changes:

Added projectId validation to reject . / .. and any / or \ separators in validate_analysis_job_request.
Updated/expanded Python unit tests to confirm my..project remains valid and traversal-shaped projectId values are rejected.
Documented the validation approach in the Sentinel knowledge file.

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 checks and associated error/telemetry behavior.
services/analysis-engine/tests/test_api.py	Updates an acceptance test to allow `..` inside IDs and adds rejection cases for traversal-like IDs.
.jules/sentinel.md	Captures the intended validation strategy for future reference.

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

    if not isinstance(project_id, str) or not project_id.strip():
        raise ValueError("Invalid analysis job request: invalid field 'projectId'")
+    if project_id in {".", ".."} or "/" in project_id or "\\" in project_id:
+        logger.warning("Security: path traversal detected in projectId")
+        raise ValueError("Invalid analysis job request: path traversal detected in 'projectId'")


+        (
+            {
+                "sourceKind": "local_audio",
+                "projectId": "..",
+                "sourceLabel": "Late Night Set",
+                "roleFocus": [],
+                "localSource": {
+                    "sourcePath": "/tmp/a.wav",
+                    "fileName": "a.wav",
+                    "extension": "wav",
+                    "fileSizeBytes": 1024000,
+                },
+            },
+            "path traversal detected in 'projectId'",
+        ),


+## 2025-10-24 - Project ID path traversal guard validation approach
+**Vulnerability:** Any project identifier that can reach a filesystem path join must be treated as untrusted.
+**Learning:** Checking for substrings like `..` can erroneously block legitimate inputs like `my..id`.
+**Prevention:** When validating identifiers like `projectId`, reject exact matches for `.` and `..`, and block any path separators (`/` and `\`), rather than blocking any string containing `..`.


Copilot

Pull request overview

Copilot reviewed 3 out of 5 changed files in this pull request and generated no new comments.

Comments suppressed due to low confidence (1)

services/analysis-engine/tests/test_api.py:315

The new projectId traversal guard also rejects the exact value ".", but the test matrix only covers ".." and path separators. Add a failing case for projectId=="." so the behavior is explicitly regression-tested.

        (
            {
                "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 2 comments.

Comments suppressed due to low confidence (1)

services/analysis-engine/src/bandscope_analysis/api.py:283

The path-traversal guard checks the raw project_id value, but the earlier validation only uses project_id.strip() for emptiness. That means inputs like " .. " bypass the {'.','..'} check (and may later be normalized/trimmed elsewhere), weakening the intended protection. Strip once and validate against the stripped value.

    if not isinstance(project_id, str) or not project_id.strip():
        raise ValueError("Invalid analysis job request: invalid field 'projectId'")
    if project_id in {".", ".."} or "/" in project_id or "\\" in project_id:
        logger.warning("Security: path traversal detected in projectId")
        raise ValueError("Invalid analysis job request: path traversal detected in 'projectId'")

+        (
+            {
+                "sourceKind": "local_audio",
+                "projectId": "..",
+                "sourceLabel": "Late Night Set",
+                "roleFocus": [],
+                "localSource": {
+                    "sourcePath": "/tmp/a.wav",
+                    "fileName": "a.wav",
+                    "extension": "wav",
+                    "fileSizeBytes": 1024000,
+                },
+            },
+            "path traversal detected in 'projectId'",
+        ),


    "numpy>=1.26",
+    "setuptools>=83.0.0",
    "soundfile>=0.13.1",
-            "urllib3>=2.7.0",
+    "urllib3>=2.7.0",
    "yt-dlp>=2026.6.9",


seonghobae · 2026-07-29T14:00:23Z

Superseded by #713 for the base-branch security remediation, and its projectId guard is carried forward there with the Copilot review findings addressed.

Specifically, #713 (services/analysis-engine/src/bandscope_analysis/api.py):

Closes the whitespace bypass flagged in the Copilot threads here (" .. " passed the exact {".",".."} comparison but a downstream trim would normalize it back to a .. segment). The guard now also rejects any leading/trailing whitespace (project_id != project_id.strip()), and tests cover " .. ", " . ", " project-1 ".
Adds the missing . case and locks the intended-allowed dotted identifiers (my..project, a.b.c) in a dedicated accepts test.
Keeps the dependency remediation separate (the yt-dlp/setuptools/brace-expansion/postcss CVE bumps live in fix(security): remediate base-branch supply-chain findings blocking all open PRs #713's focused base-fix commit as a uv constraint rather than a direct setuptools runtime dependency), avoiding the mixed-scope concern raised here.

Auto-merge disabled here to avoid landing the un-hardened guard ahead of #713. This PR can be closed once #713 merges; leaving it open for now so nothing is lost if #713's review path stalls.

Generated by Claude Code

google-labs-jules · 2026-07-29T14:02:12Z

Superseded by #713 for the base-branch security remediation, and its projectId guard is carried forward there with the Copilot review findings addressed.

Specifically, #713 (services/analysis-engine/src/bandscope_analysis/api.py):

Closes the whitespace bypass flagged in the Copilot threads here (" .. " passed the exact {".",".."} comparison but a downstream trim would normalize it back to a .. segment). The guard now also rejects any leading/trailing whitespace (project_id != project_id.strip()), and tests cover " .. ", " . ", " project-1 ".

Adds the missing . case and locks the intended-allowed dotted identifiers (my..project, a.b.c) in a dedicated accepts test.

Keeps the dependency remediation separate (the yt-dlp/setuptools/brace-expansion/postcss CVE bumps live in fix(security): remediate base-branch supply-chain findings blocking all open PRs #713's focused base-fix commit as a uv constraint rather than a direct setuptools runtime dependency), avoiding the mixed-scope concern raised here.

Auto-merge disabled here to avoid landing the un-hardened guard ahead of #713. This PR can be closed once #713 merges; leaving it open for now so nothing is lost if #713's review path stalls.

Generated by Claude Code

Understood. Acknowledging that this work is superseded by #713 and stopping work on this task.

seonghobae · 2026-07-31T12:51:42Z

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 · 2026-07-31T12:51:43Z

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

google-labs-jules · 2026-07-31T12:53:38Z

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 closed as a duplicate and superseded by #727, and stopping work on this task.

google-labs-jules · 2026-07-31T12:53:39Z

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

Acknowledged.

보안: projectId 경로 조작 취약점 수정

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Copilot AI review requested due to automatic review settings July 25, 2026 04:07

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보안: projectId 경로 조작 취약점 및 의존성 패키지 취약점 수정

f795bda

Copilot AI review requested due to automatic review settings July 25, 2026 04:15

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seonghobae added 2 commits July 25, 2026 04:19

보안: 의존성 패키지 취약점 수정 및 projectId 검증 개선

28c17c2

보안: 의존성 패키지 취약점 추가 보완 및 projectId 검증 개선

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Copilot AI review requested due to automatic review settings July 25, 2026 04:28

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seonghobae enabled auto-merge (squash) July 29, 2026 13:51

seonghobae disabled auto-merge July 29, 2026 14:00

seonghobae mentioned this pull request Jul 31, 2026

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

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seonghobae closed this Jul 31, 2026

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🛡️ Sentinel: [CRITICAL/HIGH] projectId 경로 조작(Path Traversal) 취약점 수정 - #696

🛡️ Sentinel: [CRITICAL/HIGH] projectId 경로 조작(Path Traversal) 취약점 수정#696
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