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🛡️ Sentinel: [CRITICAL] Fix Path Traversal in video API route#148

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Cukurikik merged 1 commit into
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sentinel/fix-path-traversal-10186366171341972028
May 2, 2026
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🛡️ Sentinel: [CRITICAL] Fix Path Traversal in video API route#148
Cukurikik merged 1 commit into
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sentinel/fix-path-traversal-10186366171341972028

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@Cukurikik Cukurikik commented Mar 28, 2026 •
edited by coderabbitai Bot
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🚨 Severity: CRITICAL
💡 Vulnerability: Path traversal vulnerability in src/app/api/video/[tool]/route.ts. The user-provided file.name was being concatenated directly into the output path without sanitization, allowing potential writes outside the /tmp/omni/video directory.
🎯 Impact: Attackers could potentially write arbitrary files or overwrite existing files on the server's filesystem by using relative path segments (e.g., ../../../) in the filename.
🔧 Fix: Sanitized the user-provided filename using path.basename(file.name) and correctly joined the segments using path.join().
✅ Verification: Ran pnpm exec tsc --noEmit and pnpm vitest run to ensure there are no compilation or testing regressions. Visual inspection confirms the filename is properly sanitized before appending it to the base directory.

PR created automatically by Jules for task 10186366171341972028 started by @Cukurikik

Summary by CodeRabbit

Bug Fixes

  • Improved security for file uploads by preventing potential path traversal attacks.

@google-labs-jules @Cukurikik
🛡️ Sentinel: [CRITICAL] Fix Path Traversal in video API route
50fa995 
Sanitize user-provided filename using path.basename() before writing to
the filesystem to prevent Path Traversal vulnerabilities when processing videos.

Co-authored-by: Cukurikik <266119688+Cukurikik@users.noreply.github.com>
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google-labs-jules Bot commented Mar 28, 2026

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coderabbitai Bot commented Mar 28, 2026 •
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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info
⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 76421ff5-06d9-4e14-b460-5185d7650ec6

📥 Commits

Reviewing files that changed from the base of the PR and between 4a0187c and 50fa995.

📒 Files selected for processing (1)
  • src/app/api/video/[tool]/route.ts
📝 Walkthrough

Walkthrough

The POST handler for the video API endpoint now sanitizes uploaded filenames using path.basename() to prevent path traversal attacks and constructs the temporary input file path using path.join() instead of string interpolation for safer path handling.

Changes

Cohort / File(s) Summary
File Upload Security
src/app/api/video/[tool]/route.ts		 Sanitizes uploaded filename with path.basename() and replaces string interpolation with path.join() for constructing the temporary input file path, preventing potential path traversal vulnerabilities.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐰 Hops through paths with careful feet,
Basename guards what's safe to meet,
No traversal shall slip through,
path.join() keeps routes true!
Security's woven, buggy holes grew few. 🛡️

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Write docstrings for the functions missing them to satisfy the coverage threshold.
✅ Passed checks (2 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title includes non-descriptive elements (emoji and severity tag) but clearly summarizes the main security fix: preventing path traversal vulnerability in the video API route.

✏️ Tip: You can configure your own custom pre-merge checks in the settings.

✨ Finishing Touches
📝 Generate docstrings
  • Create stacked PR
  • Commit on current branch
🧪 Generate unit tests (beta)
  • Create PR with unit tests
  • Commit unit tests in branch sentinel/fix-path-traversal-10186366171341972028

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@Cukurikik Cukurikik merged commit 9ad92fc into main May 2, 2026
2 checks passed
@Cukurikik Cukurikik deleted the sentinel/fix-path-traversal-10186366171341972028 branch May 2, 2026 10:56
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