CVE-2026-93574 — Io.netty/netty-codec-http: netty: http request smuggling via post-digit whitespace in chunk-size parsing
A flaw was found in Netty's `netty-codec-http` component. A remote attacker could exploit this vulnerability by sending a specially crafted HTTP/1.1 chunk-size token that includ…
Published: 2026-09-18 · CVSS: 6.5 · CVSS 3.1
A flaw was found in Netty's `netty-codec-http` component. A remote attacker could exploit this vulnerability by sending a specially crafted HTTP/1.1 chunk-size token that includes post-digit whitespace. This incorrect parsing of the chunk size can lead to HTTP request smuggling. This allows an attacker to bypass security controls or access unauthorized resources in proxy/backend deployments.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7