Security Advisory
CVE-2026-64785
5.3
MEDIUM
Vulnerability Description
SwiftNIO HTTP/2 was missing validation on inbound HEADERS frames that let CR, LF, NUL, SP and other control characters reach an HTTP/1.1 backend through NIOHTTP2's HTTP/2-to-HTTP/1 codec, enabling HTTP request smuggling or response splitting. This vulnerability is addressed in swift-nio-http2 version 1.45.0.
Published Date
July 23, 2026
Official Source
NIST NVD Advisory