CVE-2026-73512: Use After Free

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's HttpDatagramHandler caches the current RequestDecoder when Capsule Protocol is enabled. Stream recreation, including an internal redirect, replaces the...

CVE-2026-93568

CVE-2026-93568 affects io.netty/netty-codec-http2 and io.netty/netty-codec-http3 , where HTTP/2 and HTTP/3 Extended CONNECT requests are incorrectly downgraded as regular CONNECT requests. This can lead to a high integrity impact (CVSS 3.1: 7.5 HIGH , vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N), ...

EUVD-2026-82977

A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/2 or HTTP/3 Extended CONNECT requests. Netty's HTTP-object conversion path incorrectly processes these requests as regular HTTP/1.1 CONNECT requests, leading to a loss of critical...

CVE-2026-93568 Io.netty/netty-codec-http2: io.netty/netty-codec-http3: netty: http/2 and http/3 extended connect requests are downgraded as regular connect requests

A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/2 or HTTP/3 Extended CONNECT requests. Netty's HTTP-object conversion path incorrectly processes these requests as regular HTTP/1.1 CONNECT requests, leading to a loss of critical...

CVE-2026-93568

A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/2 or HTTP/3 Extended CONNECT requests. Netty's HTTP-object conversion path incorrectly processes these requests as regular HTTP/1.1 CONNECT requests, leading to a loss of critical...

BIT-DOTNET-SDK-2025-36854 EOL ASP.NET 6.0 Remote Code Execution Vulnerability

A vulnerability CVE-2024-38229 https://www.cve.org/CVERecord exists in EOL ASP.NET when closing an HTTP/3 stream while application code is writing to the response body, a race condition may lead to use-after-free, resulting in Remote Code Execution. Per CWE-416: Use After Free...

BIT-DOTNET-2025-36854 EOL ASP.NET 6.0 Remote Code Execution Vulnerability

A vulnerability CVE-2024-38229 https://www.cve.org/CVERecord exists in EOL ASP.NET when closing an HTTP/3 stream while application code is writing to the response body, a race condition may lead to use-after-free, resulting in Remote Code Execution. Per CWE-416: Use After Free...

CVE-2026-93568: Improper Input Validation

A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/2 or HTTP/3 Extended CONNECT requests. Netty's HTTP-object conversion path incorrectly processes these requests as regular HTTP/1.1 CONNECT requests, leading to a loss of critical...

Angie -- worker process memory corruption when using HTTP/3

The Angie Software Team reports: When using an OpenSSL version without native HTTP/3 support 3.5.0 or earlier, if the default server for the address that accepted a regular HTTPS request also used HTTP/3 the listen directive with the quic parameter, possibly on a different port, while a server...

GO-2026-6466 Traefik HTTP/3 Backend NTLM Connection Reuse in github.com/traefik/traefik

Traefik HTTP/3 Backend NTLM Connection Reuse in github.com/traefik/traefik...

GO-2026-6454 Traefik: respondingTimeouts.readTimeout is not applied to HTTP/3, leaving slow-body uploads unbounded in github.com/traefik/traefik

Traefik: respondingTimeouts.readTimeout is not applied to HTTP/3, leaving slow-body uploads unbounded in github.com/traefik/traefik...

CVE-2026-86003: Unintended Proxy or Intermediary

CoreDNS is a DNS server written in Go. Prior to 1.14.7, the DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and DNS-over-gRPC listeners in plugin/pkg/doh/doh.go, core/dnsserver/serverquic.go, and core/dnsserver/servergrpc.go call dns.Msg.Unpack without the dns.DefaultMsgAcceptFunc request policy...

FreeBSD : nginx -- buffer overflow when using ngx_http_v3_module (7dc8fd4b-b1a7-11f1-a655-3497f65b111b)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 7dc8fd4b-b1a7-11f1-a655-3497f65b111b advisory. The nginx development team reports: Buffer overflow when using ngxhttpv3module CVE-2026-90439. Severity...

CVE-2026-82399: Allocation of Resources Without Limits or Throttling

CoreDNS is a DNS server written in Go. Prior to 1.14.7, the DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and DNS-over-gRPC request paths in plugin/pkg/doh/doh.go, core/dnsserver/serverquic.go, and core/dnsserver/servergrpc.go call dns.Msg.Unpack on attacker-controlled DNS section counts before...

SUSE CVE-2026-90439

NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpv3module module. When using HTTP/3 with OpenSSL versions = OpenSSL 3.5.0 under certain configurations, a limited heap buffer overflow could happen while processing a TLS handshake. This can happen in a non-deterministic manner th...

DEBIAN-CVE-2026-90439

NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpv3module module. When using HTTP/3 with OpenSSL versions = OpenSSL 3.5.0 under certain configurations, a limited heap buffer overflow could happen while processing a TLS handshake. This can happen in a non-deterministic manner th...

CVE-2026-90439 NGINX ngx_http_v3_module vulnerability

NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpv3module module. When using HTTP/3 with OpenSSL versions = OpenSSL 3.5.0 under certain configurations, a limited heap buffer overflow could happen while processing a TLS handshake. This can happen in a non-deterministic manner th...

CVE-2026-90439 NGINX ngx_http_v3_module vulnerability

NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpv3module module. When using HTTP/3 with OpenSSL versions = OpenSSL 3.5.0 under certain configurations, a limited heap buffer overflow could happen while processing a TLS handshake. This can happen in a non-deterministic manner th...

K000162604: NGINX ngx_http_v3_module vulnerability CVE-2026-90439

Security Advisory Description NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpv3module module. When using HTTP/3 with OpenSSL versions 3.5.0 and earlier under certain configurations, a limited heap buffer overflow could happen while processing a Transport Layer Security TLS...

CVE-2026-56816

A flaw was found in Netty. An unauthenticated remote attacker can exploit a vulnerability in Netty's Http3FrameCodec by sending specially crafted HTTP/3 reserved frames with excessive payload lengths. This can lead to uncontrolled memory buffering, causing memory exhaustion and a denial of servic...