🛡️ Sentinel: [HIGH] 빈 호스트명을 악용한 SSRF 우회 취약점 패치

[seonghobae]

Current scope

Fix malformed empty-host URLs that could cross the SSRF URL-safety boundary in both the control-plane and CLI validators.

Current exact head: 30fbcdcd345a0de9a597ab1ce03e199068770838 against develop@e71d37e7c58118e6764c96ab7c4492fe33eed6f8.

The production fix rejects an empty parsed hostname before IP/DNS classification. Fleet TDD added executable coverage in descendant 6109aa9c3dd44355db3b2af2668cd57437731a36 for both validators and for http://, https://, http://user@, and https://user@. The current head 30fbcdcd… is a non-semantic descendant of that repair (6109aa… → 30fbcd… compares with files=[]), so the test/fix delta is retained without force or destructive restack.

Verification state

Keep this PR Draft. Do not transfer predecessor checks.

At current exact head 30fbcdcd…, Tests 33737129256, Security Process 33737129265, Security Scan 33737129440, SAST 33737129460, OSV 33737130262, Scorecard 33737129402, Pinned HTTPS Coverage 33737129308, OpenSSF Evidence Coverage 33737129410, Scan path coverage 33737129355, and Retention Audit Coverage 33737129234 are queued. No exact-head terminal GREEN has been established yet.

The pre-checkout runner-admission evidence has been routed to the canonical .github#712 owner path. Do not merge, mark Ready, or claim release readiness until unchanged-head repository/security evidence is terminal and review state remains clean.

[google-labs-jules]

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[devin-ai-integration]

Devin Review found 1 potential issue.