H3

1 CVEs product

Monthly

CVE-2026-23527 HIGH POC PATCH This Week

HTTP request smuggling in H3 framework versions before 1.15.5 allows remote attackers to bypass security controls by exploiting improper case-sensitive validation of the Transfer-Encoding header. The vulnerability enables attackers to inject malicious requests that diverge between client and server parsing, potentially leading to cache poisoning, session hijacking, or other attacks. Public exploit code exists for this vulnerability.

Code Injection H3 Redhat
NVD GitHub
CVSS 3.1
8.9
EPSS
0.0%
CVE-2026-23527
EPSS 0% CVSS 8.9
HIGH POC PATCH This Week

HTTP request smuggling in H3 framework versions before 1.15.5 allows remote attackers to bypass security controls by exploiting improper case-sensitive validation of the Transfer-Encoding header. The vulnerability enables attackers to inject malicious requests that diverge between client and server parsing, potentially leading to cache poisoning, session hijacking, or other attacks. Public exploit code exists for this vulnerability.

Code Injection H3 Redhat
NVD GitHub

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