🛡️ Sentinel: [CRITICAL] 정보 노출 방지를 위한 숨김 파일 유니코드 우회 패치

[seonghobae]

🚨 Severity: CRITICAL
💡 Vulnerability: 파일 이름 검증 시 유니코드 유사 점(dot) 문자를 통한 필터링 우회 취약점.
🎯 Impact: .env 와 유사하게 구성된 유니코드 숨김 파일이 노출되어 잠재적으로 중요 시스템 정보가 공개될 수 있음.
🔧 Fix: 문자열이 유니코드 점 문자로 시작하는지 확인하는 isHiddenFile 유틸리티 함수를 추가하여 필터링 우회를 방지.
✅ Verification: MainTest.testIsHiddenFile 테스트 추가 및 전체 jacocoCoverage 100% 검증 통과.

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PR created automatically by Jules for task 15380882331621357511 started by @seonghobae

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📥 Commits

Reviewing files that changed from the base of the PR and between 060abbb and 8dbc1b5.

📒 Files selected for processing (3)

• .jules/sentinel.md
• src/main/kotlin/html4tree/main.kt
• src/test/kotlin/html4tree/MainTest.kt

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