HIGHVulnerability
Verified
Global

CISA KEV: Kludex Starlette — Kludex Starlette HTTP Request/Response Smuggling Vulnerability

·Source: CISA KEV

Updated:

Executive Summary

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.

Analysis

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. Added to CISA Known Exploited Vulnerabilities catalog on 2026-09-02. Remediation due: 2026-09-16.

Indicators of Compromise (2)

CVE (2)
CVE-2026-42271
NVDMITRE CVE
CVE-2026-48710
NVDMITRE CVE
Source Attribution

Originally published by CISA KEV on Sep 2, 2026. Verified by: CISA.

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