[悪用確認] CVE-2026-48710: Kludex Starlette HTTP Request/Response Smuggling Vulnerability

Kludex Starlette 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. 対応: 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. (期限 2026-09-16)

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2026/09/02 09:00，CISA Known Exploited Vulnerabilities 发布了“[悪用確認] CVE-2026-48710: Kludex Starlette HTTP Request/Response Smuggling Vulnerability”（类型：漏洞公告）。严重程度为“严重”（critical）。CVE：CVE-2026-48710。