undici vulnerable to TLS certificate validation bypass via dropped tls options in Agent

影響: npm:undici >= 4.0.0, < 6.29.1 → 6.29.1, npm:undici >= 7.0.0, < 7.30.1 → 7.30.1, npm:undici >= 8.0.0, < 8.12.2 → 8.12.2

undici's Agent passes its constructor options through a JSON-based deep clone (JSON.parse(JSON.stringify(...))) before forwarding them to each per-origin Pool. JSON cannot represent functions, so a caller-supplied tls option containing a checkServerIdentity callback is silently dropped before it reaches the TLS layer. As a result, a TLS peer whose certificate a custom checkServerIdentity was written to reject, but which passes Node's default hostname and chain checks, is silently accepted when…

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2026. 10. 28. 오전 04:02, GitHub Advisory Database에서 "undici vulnerable to TLS certificate validation bypass via dropped tls options in Agent"을(를) 게시했습니다 (유형: 취약점 권고). 심각도는 "높음"(high)입니다. 관련 기술: JavaScript / Node.js. CVE: CVE-2026-109383.