CVE-2026-100659 Netty 4.2.0 through 4.2.17 HTTP/3 Request Routing Bypass

Netty's HTTP/3 codec io.netty:netty-codec-http3 in versions 4.2.0.Final through 4.2.17.Final does not enforce the RFC 9114 requirement that the :authority pseudo-header field and a literal host header field, when both present, carry the same value. A remote unauthenticated peer can send a single...

CVE-2026-100659 Netty 4.2.0 through 4.2.17 HTTP/3 Request Routing Bypass

Netty's HTTP/3 codec io.netty:netty-codec-http3 in versions 4.2.0.Final through 4.2.17.Final does not enforce the RFC 9114 requirement that the :authority pseudo-header field and a literal host header field, when both present, carry the same value. A remote unauthenticated peer can send a single...

CVE-2026-100662: Uncontrolled Resource Consumption

Netty's HTTP/3 codec io.netty:netty-codec-http3 versions 4.2.0.Final through 4.2.17.Final contain an uncontrolled resource consumption vulnerability in the QPACK encoder-stream instruction decoder QpackEncoderHandler, installed on the peer-initiated unidirectional QPACK encoder stream, type 0x02...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the Http3FrameCodec. An attacker can exhaust system memory by sending multiple QUIC streams with reserved frames specifying excessively large payload lengths. Remediation Upgrade...