CVE detail

CVE-2026-48710: Kludex Starlette HTTP Request/Response Smuggling Vulnerability

Source: CISA Known Exploited Vulnerabilities catalog · back to feed

Vendor / product

Kludex · Starlette

Date added (KEV): Sep 02, 2026
CISA due date: Sep 16, 2026
Ransomware campaign use: Unknown

Required action

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.

Vendor fix: Vendor advisory

Scorifya interpretation

AI-generated

A short, structured read of the record above, generated when this page first loads, then cached for a week.

Plain English

Technical detail

From CISA

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.

This vulnerability affects an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://github.com/Kludex/starlette/security/advisories/GHSA-86qp-5c8j-p5mr ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-48710

See what attackers can see on your domain

This vulnerability is on CISA's Known Exploited Vulnerabilities list, so it is being exploited in the wild right now. Scorifya can't test for Kludex directly, but in about 30 seconds it shows what your own domain exposes publicly across TLS, security headers, DNS, and cookies: the surface attackers probe first.

Run a free scan Methodology

SOC 2 compliance

Tracking remediation across your cloud infrastructure?

Scorifya Controls automates 54 SOC 2 checks across AWS, GitHub, GCP, and Azure, and gives you a manual evidence trail for the controls no tool can automate. Self-hosted, three tiers from $99/mo.

See Scorifya Controls →

References