GHSA-PGRF-4654-3GQ8 netty-incubator-codec-ohttp: Binary HTTP parser unchecked varint length overflow causes decoder crash

Summary io.netty.incubator:netty-incubator-codec-bhttp uses attacker-controlled Binary HTTP variable-length integers as long values but accumulates them into int offsets. Large valid varint lengths wrap the internal offset negative, leading to unchecked ArrayIndexOutOfBoundsException /...

netty-incubator-codec-ohttp: Binary HTTP parser unchecked varint length overflow causes decoder crash

Summary io.netty.incubator:netty-incubator-codec-bhttp uses attacker-controlled Binary HTTP variable-length integers as long values but accumulates them into int offsets. Large valid varint lengths wrap the internal offset negative, leading to unchecked ArrayIndexOutOfBoundsException /...

netty-incubator-codec-ohttp: BoringSSL HPKE private key bytes exposed through toString() and exception messages

Summary io.netty.incubator:netty-incubator-codec-ohttp-hpke-classes-boringssl exposes raw HPKE private key bytes in string representations and error messages. BoringSSLAsymmetricCipherKeyPair.toString includes the private-key parameter object, and BoringSSLAsymmetricKeyParameter.toString renders...

GHSA-2MC4-J865-9Q4R netty-incubator-codec-ohttp: BoringSSL HPKE private key bytes exposed through toString() and exception messages

Summary io.netty.incubator:netty-incubator-codec-ohttp-hpke-classes-boringssl exposes raw HPKE private key bytes in string representations and error messages. BoringSSLAsymmetricCipherKeyPair.toString includes the private-key parameter object, and BoringSSLAsymmetricKeyParameter.toString renders...

GHSA-VMR9-J6WF-PMH2 netty-incubator-codec-ohttp: [OHttpServerCodec] Native Direct-Memory Leak on AEAD Decryption Failure Leads to Gateway Denial of Service

The netty-incubator-codec-ohttp library implements Oblivious HTTP OHTTP gateway and client functionality using Netty's ByteBuf memory management. When an OHTTP gateway processes encrypted client requests, it allocates a pooled direct native off-heap ByteBuf to hold the decrypted plaintext before...

netty-incubator-codec-ohttp: [OHttpServerCodec] Native Direct-Memory Leak on AEAD Decryption Failure Leads to Gateway Denial of Service

The netty-incubator-codec-ohttp library implements Oblivious HTTP OHTTP gateway and client functionality using Netty's ByteBuf memory management. When an OHTTP gateway processes encrypted client requests, it allocates a pooled direct native off-heap ByteBuf to hold the decrypted plaintext before...

Security Bulletin: IBM® Db2® federated server is affected by multiple vulnerabilities in Netty open source libraries.

Summary IBM® Db2® federated server is affected by multiple vulnerabilities in Netty open source libraries. Vulnerability Details CVEID:CVE-2026-50020 DESCRIPTION: Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and...

USN-8654-1 netty vulnerabilities

It was discovered that Netty did not properly handle malformed HTTP/2 control frames. An attacker could use this to cause a denial of service via resource exhaustion. This issue only affects Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. CVE-2025-55163 It was discover...

cve-2026-47843 - LOW - Reactor Netty may incorrectly route traffic due to DNS resolver reuse

cve-2026-47843 - LOW - Reactor Netty may incorrectly route traffic due to DNS resolver reuse...

Linux Distros Unpatched Vulnerability : CVE-2026-75595

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Fina and 4.2.17.Final, io.netty.handler.ssl.SslClientHelloHandlerdecode...

Information Exposure

Overview Affected versions of this package are vulnerable to Information Exposure in the process handling HTTP requests when Brave Tracing is enabled. An attacker can obtain sensitive exception details from unrelated requests by sending crafted requests to the server. This is only exploitable if...

PT-2026-80318

The netty-incubator-codec-ohttp library implements Oblivious HTTP OHTTP gateway and client functionality using Netty's ByteBuf memory management. When an OHTTP gateway processes encrypted client requests, it allocates a pooled direct native off-heap ByteBuf to hold the decrypted plaintext before...

cve-2026-47874 - MEDIUM - Reactor Netty HTTP Server Denial of Service With Pipelined Requests

cve-2026-47874 - MEDIUM - Reactor Netty HTTP Server Denial of Service With Pipelined Requests...

Linux Distros Unpatched Vulnerability : CVE-2026-75596

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, the default io.netty.handler.ssl.SniHandler...

cve-2026-47844 - MEDIUM - Reactor Netty HTTP Server Leaks Exception Details

cve-2026-47844 - MEDIUM - Reactor Netty HTTP Server Leaks Exception Details...

cve-2026-47848 - MEDIUM - Reactor Netty WebSocket Client Leaks Credentials On Redirect

cve-2026-47848 - MEDIUM - Reactor Netty WebSocket Client Leaks Credentials On Redirect...

cve-2026-47845 - MEDIUM - Reactor Netty HTTP Server may incorrectly evaluate proxy addresses

cve-2026-47845 - MEDIUM - Reactor Netty HTTP Server may incorrectly evaluate proxy addresses...

Improper Check for Unusual or Exceptional Conditions

Overview io.netty:netty-handler is a library that provides an asynchronous event-driven network application framework and tools for rapid development of maintainable high performance and high scalability protocol servers and clients. In other words, Netty is a NIO client server framework which...

CVE-2026-75595

Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Fina and 4.2.17.Final, io.netty.handler.ssl.SslClientHelloHandlerdecode checks the wrong offset before reading the four-byte TLS handshake header, so a ClientHello whose handshake header spans records can cause...

CVE-2026-75596

Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, the default io.netty.handler.ssl.SniHandler constructors use the pre-handshake ClientHello aggregation path in handler/src/main/java/io/netty/handler/ssl/SslClientHelloHandler.java at...