UBUNTU-CVE-2026-42581

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, HttpObjectDecoder strips a conflicting Content-Length header when a request carries both Transfer-Encoding: chunked and Content-Length, but only for HTTP/1.1 messages. The guard is absen...

CVE-2026-42581

Netty vulnerability CVE-2026-42581 affects Netty in HTTP handling. Before 4.2.13.Final and 4.1.133.Final, HttpObjectDecoder does not clear a conflicting Content-Length header when a request carries both Transfer-Encoding: chunked and Content-Length for HTTP/1.1; HTTP/1.0 requests lack this guard....

CVE-2026-42581 Netty: HTTP/1.0 TE+CL Coexistence Bypasses Smuggling Sanitization

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, HttpObjectDecoder strips a conflicting Content-Length header when a request carries both Transfer-Encoding: chunked and Content-Length, but only for HTTP/1.1 messages. The guard is absen...