Security Advisory

CVE-2026-23527

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-01-15 19:24:20
Last updated 2026-04-13 16:48:19
Assigner GitHub_M
State PUBLISHED

Description

H3 is a minimal H(TTP) framework built for high performance and portability. Prior to 1.15.5, there is a critical HTTP Request Smuggling vulnerability. readRawBody is doing a strict case-sensitive check for the Transfer-Encoding header. It explicitly looks for "chunked", but per the RFC, this header should be case-insensitive. This vulnerability is fixed in 1.15.5.