The vulnerability of the HAProxy PROXY v2 framework for developing network applications, servers, and clients using the Netty protocol allows a attacker to cause service interruptions.

The vulnerability of the HAProxy PROXY v2 framework for developing network applications, servers, and Netty-based clients relates to improper syntax validation during input processing. Exploiting this vulnerability allows an attacker to cause service interruptions remotely...

SUSE CVE-2026-93564

A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted PROXY-protocol v2 headers. This can lead to memory exhaustion, resulting in a Denial of Service DoS for the affected system...

Linux Distros Unpatched Vulnerability : CVE-2026-93564

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted...

CVE-2026-93564

A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted PROXY-protocol v2 headers. This can lead to memory exhaustion, resulting in a Denial of Service DoS for the affected system...

DEBIAN-CVE-2026-93564

A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted PROXY-protocol v2 headers. This can lead to memory exhaustion, resulting in a Denial of Service DoS for the affected system...

UBUNTU-CVE-2026-93564

A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted PROXY-protocol v2 headers. This can lead to memory exhaustion, resulting in a Denial of Service DoS for the affected system...

CVE-2026-93564

A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted PROXY-protocol v2 headers. This can lead to memory exhaustion, resulting in a Denial of Service DoS for the affected system...

CVE-2026-93564 Io.netty/netty-codec-haproxy: netty: haproxy proxy-v2 nested-tlv grandchild bytebuf reference-count leak (incomplete fix of pr #16881)

A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted PROXY-protocol v2 headers. This can lead to memory exhaustion, resulting in a Denial of Service DoS for the affected system...

CVE-2026-93564 Io.netty/netty-codec-haproxy: netty: haproxy proxy-v2 nested-tlv grandchild bytebuf reference-count leak (incomplete fix of pr #16881)

A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted PROXY-protocol v2 headers. This can lead to memory exhaustion, resulting in a Denial of Service DoS for the affected system...

EUVD-2026-82930

A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted PROXY-protocol v2 headers. This can lead to memory exhaustion, resulting in a Denial of Service DoS for the affected system...

CVE-2026-93564

A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted PROXY-protocol v2 headers. This can lead to memory exhaustion, resulting in a Denial of Service DoS for the affected system...

PT-2026-95399

Name of the Vulnerable Software and Affected Versions Netty affected versions not specified Description A reference-count leak exists in the HAProxy PROXY-v2 message decoder. A remote, unauthenticated attacker can exploit this by sending specially crafted PROXY-protocol v2 headers, specifically...

CVE-2026-93564: Undefined Security Weakness

A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted PROXY-protocol v2 headers. This can lead to memory exhaustion, resulting in a Denial of Service DoS for the affected system...

CVE-2026-62309

A flaw was found in CoreDNS. A remote attacker can send a specially crafted 28-byte UDP datagram to a CoreDNS server with the proxyproto plugin enabled. This malformed datagram can cause the CoreDNS process to crash, leading to a denial of service DoS. The vulnerability arises from improper...

Security update for nginx

This update for nginx fixes the following issues: CVE-2026-42055: heap buffer overflow in the ngxhttpproxyv2module and ngxhttpgrpcmodule modules bsc1268492. CVE-2026-42533: heap buffer overflow in the map directive and regex matching bsc1271514. CVE-2026-48142: heap buffer overread in the...

SUSE SLES16 Security Update : nginx (SUSE-SU-2026:22943-1)

The remote SUSE Linux SLES16 / SLESSAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:22943-1 advisory. This update for nginx fixes the following issues - CVE-2026-40460: bypass of authorization and bypass of rate limiting when NGINX ...

SUSE-SU-2026:3329-1 Security update for nginx

This update for nginx fixes the following issues - CVE-2026-42055: heap-based buffer overflow in the ngxhttpproxyv2module and ngxhttpgrpcmodule modules bsc1268492. - CVE-2026-48142: heap buffer over-read in the ngxhttpcharsetmodule module bsc1268495. - Remote denial of service via the HTTP/2 bomb...

BIT-NGINX-GATEWAY-FABRIC-2026-42055 NGINX ngx_http_proxy_v2_module and ngx_http_grpc_module vulnerability

NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpproxyv2module and ngxhttpgrpcmodule modules. This vulnerability exists when the proxyhttpversion to 2 or grpcpass directives are used to proxy HTTP/2 traffic, the ignoreinvalidheaders directive is set to off, and the...

Updated nginx packages fix security vulnerabilities

ngxhttpproxyv2module and ngxhttpgrpcmodule vulnerability. CVE-2026-42055 ngxhttpcharsetmodule vulnerability. CVE-2026-48142...

CVE-2026-62309 CoreDNS: proxyproto plugin panics on PPv2 datagram with non-UDP transport — single 28-byte packet remote DoS

CoreDNS is a DNS server written in Go. Prior to 1.14.4, a single 28-byte UDP datagram can crash the CoreDNS process when the proxyproto plugin is enabled because plugin/pkg/proxyproto/proxyproto.go PacketConn.ReadFrom handles a PROXY v2 header with non-UDP transport such as family byte 0x11,...