📌 이 취약점에 대해 확인된 사실
전부 발행처가 발표한 값입니다. 우리가 계산하거나 판단한 숫자는 하나도 없습니다.
악용 여부
악용 확인
심각도 (발행처 발표값)
보통6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
악용 확률 (EPSS)
70.3%
📄 원문 그대로
아래 문장은 전부 발행처가 쓴 것입니다. 번역하지 않습니다 — 보안 문서의 오역은 조치를 바꿉니다.
취약점 설명 (NVD)
Starlette is a lightweight ASGI framework/toolkit. Prior to version 1.0.1, the HTTP `Host` request header was not validated before being used to reconstruct `request.url`. Because the routing algorithm relies on the raw HTTP path while `request.url` is rebuilt from the `Host` header, a malformed header could make `request.url.path` differ from the path that was actually requested. Middleware and endpoints that apply security restrictions based on `request.url` (rather than the raw `scope` path) could therefore be bypassed. Users should upgrade to a version greater than or equal to version 1.0.1, which validates the `Host` header against the grammar of RFC 9112 §3.2 / RFC 3986 §3.2.2 when constructing `request.url` and falls back to `scope["server"]` for malformed values.
CISA 원문
Kludex Starlette contains a HTTP request/response smuggling vulnerability that could allow attackers to inject paths into the host part, prepending the actual path leading to issues such as authentication bypass when the authentication depends on the reconstructed URL’s path. This vulnerability could be chaned with CVE-2026-42271.— CISA KEV · shortDescription 원문
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.— CISA KEV · requiredAction 원문
악용 확률 변화
우리가 매일 저장한 EPSS 스냅샷입니다. 원본은 전날 값만 주므로, 이 표는 수집을 시작한 이후만 보여줍니다.
| 기준일 | 확률 | 백분위 |
|---|---|---|
| 2026-11-03 | 70.29% | 99.4% |
| 2026-11-02 | 70.29% | 99.4% |
| 2026-11-01 | 70.29% | 99.4% |
| 2026-10-31 | 70.29% | 99.4% |
| 2026-10-30 | 70.29% | 99.4% |
| 2026-10-29 | 70.29% | 99.4% |
| 2026-10-28 | 70.29% | 99.4% |
| 2026-10-27 | 70.29% | 99.4% |
| 2026-10-26 | 70.29% | 99.4% |
| 2026-10-25 | 70.29% | 99.4% |
| 2026-10-24 | 7.06% | 94.2% |
| 2026-10-23 | 7.06% | 94.2% |
| 2026-10-22 | 7.06% | 94.2% |
| 2026-10-21 | 7.06% | 94.2% |
🧩 같은 약점 유형 — CWE-444
같은 분류의 다른 취약점입니다. 같은 실수가 제품을 가리지 않고 반복됩니다.