docs: Add security issue report for Aether upload auth

[Vaiditya2207]

Add security issue report for Aether upload auth.

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PR created automatically by Jules for task 10650569272203599136 started by @Vaiditya2207

Summary by CodeRabbit

• Documentation
  • Added a new security finding to the security issue documentation, including impact, reproduction steps, and recommended remediation.
  • Expanded the recorded security notes with additional dated findings related to file handling and authentication fallback behavior.

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Project	Deployment	Actions	Updated (UTC)
okernel	Ready	Preview, Comment	Jul 5, 2026 9:55pm

[coderabbitai]

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: 402ae540-18a1-42fe-ba43-2ef487c542f5

📥 Commits

Reviewing files that changed from the base of the PR and between ffef955 and af6ada2.

📒 Files selected for processing (2)

• .jules/sentinel.md
• SECURITY_ISSUE.md

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📝 Walkthrough

Walkthrough

This PR adds documentation-only entries recording two security findings: an arbitrary file write risk from unsanitized multipart filenames in PathBuf::join, and a broken authentication fallback where a missing AETHER_UPLOAD_KEY env var defaults to a hardcoded credential.

Changes

Security findings documentation

Layer / File(s)	Summary
Sentinel audit log entries .jules/sentinel.md	Adds dated auditor notes describing arbitrary file write via unsanitized multipart filename and insecure fallback credential when AETHER_UPLOAD_KEY is unset.
Broken auth security issue report SECURITY_ISSUE.md	Adds a new "CRITICAL Broken Auth" section documenting the hardcoded fallback key ("update_me_please") in upload_handler, with reproduction steps, remediation guidance, and references.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Possibly related issues

• CRITICAL Injection: Arbitrary File Write via Path Traversal in Aether Upload API #63: Documents the same upload_handler path traversal and hardcoded-default auth flaws recorded in this PR's security findings.

Possibly related PRs

• Vaiditya2207/OKernel#156: Adds overlapping .jules/sentinel.md and SECURITY_ISSUE.md entries for the same arbitrary file write vulnerability in the Aether upload handler.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: a documentation update adding a security issue report for Aether upload authentication.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch sentinel-report-10650569272203599136

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