EUVD-2026-37717

NGINX Open Source has a vulnerability in the ngxhttpv3module module. When NGINX Open Source is configured to use the HTTP/3 QUIC module, a remote unauthenticated attacker along with conditions beyond their control can use a specially crafted HTTP/3 session to reopen a QPACK encoder stream. This m...

CVE-2026-42530

Summary : NGINX Open Source’s ngx_http_v3_module vulnerability (CVE-2026-42530) occurs when HTTP/3 QUIC is enabled. A remote unauthenticated attacker can craft an HTTP/3 session to reopen a QPACK encoder stream, causing a Use-after-Free in the NGINX worker process and potentially triggering a res...

CVE-2026-42530

NGINX Open Source has a vulnerability in the ngxhttpv3module module. When NGINX Open Source is configured to use the HTTP/3 QUIC module, a remote unauthenticated attacker along with conditions beyond their control can use a specially crafted HTTP/3 session to reopen a QPACK encoder stream. This m...

K000161616: NGINX ngx_http_v3_module vulnerability CVE-2026-42530

Security Advisory Description NGINX Open Source has a vulnerability in the ngxhttpv3module module. When NGINX Open Source is configured to use the HTTP/3 QUIC module, a remote unauthenticated attacker along with conditions beyond their control can use a specially crafted HTTP/3 session to reopen ...

PT-2026-50439

Name of the Vulnerable Software and Affected Versions NGINX Open Source versions 1.31.0 through 1.31.1 NGINX Ingress Controller affected versions not specified NGINX Gateway Fabric affected versions not specified NGINX Instance Manager affected versions not specified Description A use-after-free...

Authentication Bypass Using an Alternate Path or Channel

Overview github.com/traefik/traefik/v2/pkg/server is a server package for traefik, a cloud native edge router. Affected versions of this package are vulnerable to Authentication Bypass Using an Alternate Path or Channel in the TLS configuration selection process for HTTP/3 connections, where an...

Authentication Bypass Using an Alternate Path or Channel

Overview Affected versions of this package are vulnerable to Authentication Bypass Using an Alternate Path or Channel in the TLS configuration selection process for HTTP/3 connections, where an exact, case-sensitive lookup on the SNI value fails to match wildcard or mixed-case hostnames. An...

GHSA-9CR8-Q42Q-G8M7 Traefik: HTTP/3 mTLS bypass via exact SNI TLSOptions lookup for wildcard and mixed-case hosts

Summary There is a critical vulnerability in Traefik's HTTP/3 QUIC TLS configuration selection that allows unauthenticated clients to bypass router-specific mTLS enforcement. When HTTP/3 is enabled on an entrypoint, the TLS handshake selects the applicable TLS configuration through an exact,...

Traefik: HTTP/3 mTLS bypass via exact SNI TLSOptions lookup for wildcard and mixed-case hosts

Summary There is a critical vulnerability in Traefik's HTTP/3 QUIC TLS configuration selection that allows unauthenticated clients to bypass router-specific mTLS enforcement. When HTTP/3 is enabled on an entrypoint, the TLS handshake selects the applicable TLS configuration through an exact,...

Authentication Bypass Using an Alternate Path or Channel

Overview Affected versions of this package are vulnerable to Authentication Bypass Using an Alternate Path or Channel in the TLS configuration selection process for HTTP/3 connections, where an exact, case-sensitive lookup on the SNI value fails to match wildcard or mixed-case hostnames. An...

Netty HTTP/3 QPACK Blocked Streams Memory Exhaustion

Summary A memory exhaustion vulnerability in the Netty HTTP/3 codec allows the creation of an infinite number of blocked streams, which can cause OOM error. Details The vulnerability exists in io.netty.handler.codec.http3.QpackDecodershouldWaitForDynamicTableUpdates: If a client sends a header...

CVE-2026-48748

Netty is a network application framework for development of protocol servers and clients. Starting in version 4.2.0.Final and prior to version 4.2.15.Final, a memory exhaustion vulnerability in the Netty HTTP/3 codec allows the creation of an infinite number of blocked streams, which can cause OO...

UBUNTU-CVE-2026-48748

Netty is a network application framework for development of protocol servers and clients. Starting in version 4.2.0.Final and prior to version 4.2.15.Final, a memory exhaustion vulnerability in the Netty HTTP/3 codec allows the creation of an infinite number of blocked streams, which can cause OO...

CVE-2026-48748

Netty HTTP/3 vulnerability CVE-2026-48748: a memory-exhaustion flaw in the Netty HTTP/3 codec prior to 4.2.15.Final allows an infinite number of blocked streams, leading to OOM. The issue is fixed in Netty version 4.2.15.Final. Affected component: Netty’s HTTP/3 codec. Root cause: unbounded block...

CVE-2026-48748 Netty HTTP/3 QPACK Blocked Streams Memory Exhaustion

Netty is a network application framework for development of protocol servers and clients. Starting in version 4.2.0.Final and prior to version 4.2.15.Final, a memory exhaustion vulnerability in the Netty HTTP/3 codec allows the creation of an infinite number of blocked streams, which can cause OO...

CVE-2026-48748 Netty HTTP/3 QPACK Blocked Streams Memory Exhaustion

Netty is a network application framework for development of protocol servers and clients. Starting in version 4.2.0.Final and prior to version 4.2.15.Final, a memory exhaustion vulnerability in the Netty HTTP/3 codec allows the creation of an infinite number of blocked streams, which can cause OO...

CVE-2026-48748 Netty HTTP/3 QPACK Blocked Streams Memory Exhaustion

Netty is a network application framework for development of protocol servers and clients. Starting in version 4.2.0.Final and prior to version 4.2.15.Final, a memory exhaustion vulnerability in the Netty HTTP/3 codec allows the creation of an infinite number of blocked streams, which can cause OO...

CVE-2026-44892

Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, the default configuration of the Http3ConnectionHandler in the Netty HTTP/3 codec lacks an enforced maximum header size limit. When a peer does not explicitly specify...

UBUNTU-CVE-2026-44892

Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, the default configuration of the Http3ConnectionHandler in the Netty HTTP/3 codec lacks an enforced maximum header size limit. When a peer does not explicitly specify...

CVE-2026-44892

Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, the default configuration of the Http3ConnectionHandler in the Netty HTTP/3 codec lacks an enforced maximum header size limit. When a peer does not explicitly specify...