🛡️ Sentinel: Fix DoS via Long Version Strings

[google-labs-jules]

🛡️ Sentinel: [CRITICAL/MEDIUM] Fix DoS via Long Version Strings

🚨 Severity: MEDIUM
💡 Vulnerability: The compareTo function lacked input length validation, allowing processing of arbitrarily long version strings.
🎯 Impact: Potential Denial of Service (DoS) via resource exhaustion (CPU/Memory) in string operations (split, trim, replace).
🔧 Fix: Added MAX_VERSION_LENGTH (256) constant and a check at the start of compareTo.
✅ Verification: Added a regression test in src/security.test.ts that verifies long strings return false immediately.

Also updated .jules/sentinel.md with the new learning.

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PR created automatically by Jules for task 11839686817003230731 started by @srod

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Summary by cubic

Prevented DoS in version comparison by limiting input length and rejecting excessively long version strings. Inputs longer than 256 characters are now rejected early to avoid CPU and memory exhaustion.

• Bug Fixes
  • Enforced MAX_VERSION_LENGTH = 256 in compareTo; returns NaN when exceeded.
  • Added a regression test to ensure isAtLeast returns false for overly long inputs.
  • Updated security notes and added a patch changeset.

^{Written for commit 635568f. Summary will update on new commits.}

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[changeset-bot]

🦋 Changeset detected

Latest commit: 635568f

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
node-version	Patch

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (67d8793) to head (635568f).

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #820   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         1           
  Lines           46        49    +3     
  Branches        16        17    +1     
=========================================
+ Hits            46        49    +3     

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

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