CVE-2026-49457

erlangquic is a pure Erlang QUIC implementation. Prior to version 1.4.4, the QUIC client did not authenticate the server during the TLS 1.3 handshake. The CertificateVerify signature was not checked, the certificate chain was not validated, and the hostname was not compared against the certificat...

CVE-2026-49457 QUIC has Broken TLS verification

erlangquic is a pure Erlang QUIC implementation. Prior to version 1.4.4, the QUIC client did not authenticate the server during the TLS 1.3 handshake. The CertificateVerify signature was not checked, the certificate chain was not validated, and the hostname was not compared against the certificat...

EUVD-2026-58756

erlangquic is a pure Erlang QUIC implementation. Prior to version 1.4.4, the QUIC client did not authenticate the server during the TLS 1.3 handshake. The CertificateVerify signature was not checked, the certificate chain was not validated, and the hostname was not compared against the certificat...

CVE-2026-49457

CVE-2026-49457 affects erlang_quic prior to 1.4.4, where the QUIC client did not authenticate the server during TLS 1.3 handshakes. Specifically, CertificateVerify signature checks were missing, the certificate chain was not validated, and hostname verification was skipped, effectively making ver...

CVE-2026-49457

erlangquic is a pure Erlang QUIC implementation. Prior to version 1.4.4, the QUIC client did not authenticate the server during the TLS 1.3 handshake. The CertificateVerify signature was not checked, the certificate chain was not validated, and the hostname was not compared against the certificat...

GO-2026-5287 Traefik: HTTP/3 mTLS bypass via exact SNI TLSOptions lookup for wildcard and mixed-case hosts in github.com/traefik/traefik

Traefik's HTTP/3 TLS configuration selection is vulnerable to a bypass when using wildcard or mixed-case hosts in the SNI. The HTTP/3 QUIC path performed a direct, case-sensitive lookup on the SNI value to select the applicable TLS configuration. This lookup failed to match wildcard host patterns...

K000162871: PowerDNS DNSdist vulnerability CVE-2026-40211

Security Advisory Description An attacker can send crafted DNS over HTTP/3 queries, triggering an exception that prevents some buffer from being freed right away. The buffer will be freed at the end of the QUIC connection, but on some setups it might be possible to open enough concurrent DoH3...

CVE-2026-56816 Netty: Memory Exhaustion via HTTP/3 Reserved Frame Types

Netty is a network application framework for development of protocol servers and clients. Prior to 4.2.16.Final, Netty's Http3FrameCodec buffers incoming data for HTTP/3 reserved frame types up to the wire-specified payload length without limits; decodeFrame trusts payLoadLength, allowing an...

CVE-2026-56816 Netty: Memory Exhaustion via HTTP/3 Reserved Frame Types

Netty is a network application framework for development of protocol servers and clients. Prior to 4.2.16.Final, Netty's Http3FrameCodec buffers incoming data for HTTP/3 reserved frame types up to the wire-specified payload length without limits; decodeFrame trusts payLoadLength, allowing an...

PT-2026-54772

Name of the Vulnerable Software and Affected Versions erlang quic versions prior to 1.4.4 Description The QUIC client fails to authenticate the server during the TLS 1.3 handshake. Specifically, the CertificateVerify signature is not checked, the certificate chain is not validated, and the hostna...

PT-2026-50163

Name of the Vulnerable Software and Affected Versions Traefik versions 3.6.17 through 3.7.1 Description An issue in the HTTP/3 QUIC TLS configuration selection allows unauthenticated clients to bypass router-specific mutual TLS mTLS enforcement. When HTTP/3 is enabled, the TLS handshake uses an...

Linux Distros Unpatched Vulnerability : CVE-2026-40898

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - quic-go is an implementation of the QUIC protocol in Go. Prior to version 0.59.1, an attacker can cause excessive memory allocation in quic-go's HTTP/3 client a...

CVE-2026-40898

quic-go is an implementation of the QUIC protocol in Go. Prior to version 0.59.1, an attacker can cause excessive memory allocation in quic-go's HTTP/3 client and server implementations by sending a QPACK-encoded HEADERS frame that decodes into a large trailer field section with many unique field...

CVE-2026-47070

Sensitive Data Exposure vulnerability in benoitc hackney allows Retrieve Embedded Sensitive Data. The HTTP/3 redirect handler in src/hackneyh3.erl passes the original request headers unchanged to the redirect target without performing any cross-origin check. When a client issues an HTTP/3 request...

CVE-2026-47077 Unbounded body accumulation in HTTP/3 response loop in hackney

Allocation of Resources Without Limits or Throttling vulnerability in benoitc hackney allows Flooding. hackneyh3:awaitresponseloop/6 accumulates the HTTP/3 response body in memory without any size cap. The after Timeout clause is a per-message inactivity timer that resets on every received chunk,...

curl: CVE-2026-9545: exposing HTTP/3 early data

Summary: When the ngtcp2 HTTP/3 backend reuses a TLS session that advertises early data support, cfngtcp2onsessionreuse initializes the HTTP/3 connection state and marks the connection filter as connected before the new QUIC/TLS handshake has completed. The request send path can then reach...

MGASA-2026-0146 Updated haproxy packages fix security vulnerability

The HTTP/3 parser does not check that the received body length matches a previously announced content-length when the stream is closed via a frame with an empty payload. This can cause desynchronization issues with the backend server and could be used for request smuggling. CVE-2026-33555...

GHSA-QHMP-Q7XH-99RH CoreDNS has TSIG authentication bypass on DoT, DoH, DoH3, DoQ, and gRPC

Summary CoreDNS' tsig plugin can be bypassed on non-plain-DNS transports because it trusts the transport writer's TsigStatus instead of performing verification itself. In the attached PoC, plain DNS/TCP correctly rejects an invalid TSIG NOTAUTH, while the same invalid-TSIG request is accepted ove...

SUSE-SU-2026:1568-1 Security update for haproxy

This update for haproxy fixes the following issue: - CVE-2026-33555: Request smuggling via HTTP/3 parser desynchronization bsc1262103...

SUSE-SU-2026:21353-1 Security update for haproxy

This update for haproxy fixes the following issues: Security issue: - CVE-2026-33555: Request smuggling via HTTP/3 parser desynchronization bsc1262103. - bug in SLZ compression bsc1261626...