CVE-2026-59919

A flaw was found in the netty-codec-haproxy component, part of the Netty network application framework. This vulnerability allows a remote attacker to perform protocol-level injection attacks by crafting malformed HAProxy protocol frames that contain embedded carriage return CR and line feed LF...

CVE-2026-55851

A flaw was found in Netty's codec-haproxy module. A remote attacker could exploit a vulnerability in the HAProxyMessageDecoder by sending a specially crafted PROXY protocol v2 message. This leads to unbounded buffer accumulation, causing a denial of service DoS due to memory exhaustion...

Netty: HAProxy V1 Protocol CRLF Injection via AF_UNIX Address

Security Vulnerability Report: HAProxy V1 Protocol CRLF Injection via AFUNIX Address in Netty 1. Vulnerability Summary | Field | Value | |-------|-------| | Product | Netty | | Version | 4.2.12.Final and all prior versions with codec-haproxy | | Component |...

GHSA-WH89-7897-X99H Netty: HAProxy V1 Protocol CRLF Injection via AF_UNIX Address

Security Vulnerability Report: HAProxy V1 Protocol CRLF Injection via AFUNIX Address in Netty 1. Vulnerability Summary | Field | Value | |-------|-------| | Product | Netty | | Version | 4.2.12.Final and all prior versions with codec-haproxy | | Component |...

GHSA-Q6CQ-MHR2-JMR5 Netty: [codec-haproxy] Signed-Byte Sentinel Collision in HAProxyMessageDecoder Leads to Unbounded Memory Exhaustion

The HAProxyMessageDecoder in netty's codec-haproxy module performs protocol version detection by reading the 13th byte of the inbound stream as a signed Java byte and widening it to int without masking. When an attacker sends a PROXY protocol v2 binary prefix 0D 0A 0D 0A 00 0D 0A 51 55 49 54 0A...

Netty: [codec-haproxy] Signed-Byte Sentinel Collision in HAProxyMessageDecoder Leads to Unbounded Memory Exhaustion

The HAProxyMessageDecoder in netty's codec-haproxy module performs protocol version detection by reading the 13th byte of the inbound stream as a signed Java byte and widening it to int without masking. When an attacker sends a PROXY protocol v2 binary prefix 0D 0A 0D 0A 00 0D 0A 51 55 49 54 0A...

SUSE CVE-2026-55851

Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final up to but not including 4.2.16.Final, and 4.1.0.Final up to but not including 4.1.135, the HAProxyMessageDecoder in Netty's codec-haproxy module performs protocol version detection by...

PT-2026-63550

Security Vulnerability Report: HAProxy V1 Protocol CRLF Injection via AF UNIX Address in Netty 1. Vulnerability Summary | Field | Value | |-------|-------| | Product | Netty | | Version | 4.2.12.Final and all prior versions with codec-haproxy | | Component |...

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 HAProxyMessageDecoder. An attacker can cause unbounded memory allocation by sending a specially crafted PROXY protocol v2 binary prefix with a version byte of 0xFF, which...

DEBIAN-CVE-2026-55851

Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final up to but not including 4.2.16.Final, and 4.1.0.Final up to but not including 4.1.135, the HAProxyMessageDecoder in Netty's codec-haproxy module performs protocol version detection by...

CVE-2026-55851

Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final up to but not including 4.2.16.Final, and 4.1.0.Final up to but not including 4.1.135, the HAProxyMessageDecoder in Netty's codec-haproxy module performs protocol version detection by...

CVE-2026-55851 Netty codec-haproxy: Signed-Byte Sentinel Collision in HAProxyMessageDecoder Leads to Unbounded Memory Exhaustion

Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final up to but not including 4.2.16.Final, and 4.1.0.Final up to but not including 4.1.135, the HAProxyMessageDecoder in Netty's codec-haproxy module performs protocol version detection by...

CVE-2026-55851

CVE-2026-55851 affects Netty (codec-haproxy) where the HAProxyMessageDecoder reads the 13th byte as a signed value and sign-extends to int, causing a PROXY v2 prefix with 0xFF to collide with the decoder’s need-more-data sentinel. This leads to unbounded cumulation and potential memory exhaustion...

CVE-2026-55851 Netty codec-haproxy: Signed-Byte Sentinel Collision in HAProxyMessageDecoder Leads to Unbounded Memory Exhaustion

Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final up to but not including 4.2.16.Final, and 4.1.0.Final up to but not including 4.1.135, the HAProxyMessageDecoder in Netty's codec-haproxy module performs protocol version detection by...

CVE-2026-55851

Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final up to but not including 4.2.16.Final, and 4.1.0.Final up to but not including 4.1.135, the HAProxyMessageDecoder in Netty's codec-haproxy module performs protocol version detection by...

CVE-2026-55851 Netty codec-haproxy: Signed-Byte Sentinel Collision in HAProxyMessageDecoder Leads to Unbounded Memory Exhaustion

Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final up to but not including 4.2.16.Final, and 4.1.0.Final up to but not including 4.1.135, the HAProxyMessageDecoder in Netty's codec-haproxy module performs protocol version detection by...

CLEANSTART-2026-PI10084 Security fixes for CVE-2025-61732, CVE-2025-68121, CVE-2026-25679, CVE-2026-25680, CVE-2026-25681, CVE-2026-27136, CVE-2026-27139, CVE-2026-27142, CVE-2026-33814, CVE-2026-39821, CVE-2026-39824, CVE-2026-39827, CVE-2026-39828, CVE-2026-39829, CVE-2026-39830, CVE-2026-39831, CVE-2026-39832, CVE-2026-39833, CVE-2026-39834, CVE-2026-39835, CVE-2026-42502, CVE-2026-42506, CVE-2026-42508, CVE-2026-46595, CVE-2026-46597, CVE-2026-46598 applied in versions: 0.14.12-r1, 0.15.1-r0

Multiple security vulnerabilities affect the haproxy-ingress package. These issues are resolved in later releases. See references for individual vulnerability details...

CLEANSTART-2026-AC64135 Security fixes for CVE-2020-11100 applied in versions: 2.1.4-r0

Security vulnerability affects the haproxy package. This issue is resolved in later releases. See references for vulnerability details...

PT-2026-62225

Name of the Vulnerable Software and Affected Versions Netty versions 4.1.0.Final through 4.1.134 Netty versions 4.2.0.Final through 4.2.15 Description The HAProxyMessageDecoder in the codec-haproxy module performs protocol version detection by reading the 13th byte as a signed Java byte and...

CVE-2026-26081

HAProxy Community Edition 3.0 through 3.3 before 3.3.3 lacks a length check for the NEWTOKEN format. HAProxy Enterprise and ALOHA are also affected...