CVE-2026-44894

Netty is a network application framework for development of protocol servers and clients. NoQuicTokenHandler is the tokenHandler used when the application does not set one. Prior to version 4.2.15.Final, its writeToken returns false server will not send Retry — acceptable, but validateToken...

CVE-2026-45674

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty's DnsResolveContext fails to validate the origin bailiwick of CNAME records in DNS responses. Versions 4.1.135.Final and 4.2.15.Final patch the issue...

CVE-2026-47244

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, DefaultHttp2Connection.DefaultEndpoint initialises maxActiveStreams/maxStreams to Integer.MAXVALUE, and Http2Settings never inserts...

CVE-2026-45416

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, SslClientHelloHandler.decode reads the 24-bit TLS handshake length and, when the ClientHello does not fit in the first record, eagerly allocates...

CVE-2026-45673

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty's DNS resolver uses a predictable PRNG for generating DNS transaction IDs and defaults to a static UDP source port. This combination reduces the entrop...

UBUNTU-CVE-2026-45416

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, SslClientHelloHandler.decode reads the 24-bit TLS handshake length and, when the ClientHello does not fit in the first record, eagerly allocates...

UBUNTU-CVE-2026-44894

Netty is a network application framework for development of protocol servers and clients. NoQuicTokenHandler is the tokenHandler used when the application does not set one. Prior to version 4.2.15.Final, its writeToken returns false server will not send Retry — acceptable, but validateToken...

UBUNTU-CVE-2026-45673

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty's DNS resolver uses a predictable PRNG for generating DNS transaction IDs and defaults to a static UDP source port. This combination reduces the entrop...

CVE-2026-50560 Netty susceptible to HTTP/2 Reset Attack with different on-the-wire signature

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty HTTP/2 max header size handling produces an attack similar to HTTP/2 Rapid Reset. There is a setting in the http2 specification called...

CVE-2026-50560

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty HTTP/2 max header size handling produces an attack similar to HTTP/2 Rapid Reset. There is a setting in the http2 specification called...

CVE-2026-50560

Netty HTTP/2 vulnerability CVE-2026-50560 affects Netty versions 4.1.135.Final and 4.2.15.Final. When a client sends SETTINGS_MAX_HEADER_LIST_SIZE, Netty may read a request, proxy it to the origin, attempt to generate a response, and then fail while writing response headers, creating an exception...

CVE-2026-50560 Netty susceptible to HTTP/2 Reset Attack with different on-the-wire signature

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty HTTP/2 max header size handling produces an attack similar to HTTP/2 Rapid Reset. There is a setting in the http2 specification called...

CVE-2026-50560

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty HTTP/2 max header size handling produces an attack similar to HTTP/2 Rapid Reset. There is a setting in the http2 specification called...

CVE-2026-50560 Netty susceptible to HTTP/2 Reset Attack with different on-the-wire signature

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty HTTP/2 max header size handling produces an attack similar to HTTP/2 Rapid Reset. There is a setting in the http2 specification called...

CVE-2026-50020 Netty's HttpObjectDecoder skips arbitrary initial control characters when only initial CRLF characters are permitted

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, before reading the first request-line, HttpObjectDecoder skips every byte for which Character.isISOControlb is true 0x00–0x1F and 0x7F as well as all...

CVE-2026-50020

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, before reading the first request-line, HttpObjectDecoder skips every byte for which Character.isISOControlb is true 0x00–0x1F and 0x7F as well as all...

CVE-2026-50020 Netty's HttpObjectDecoder skips arbitrary initial control characters when only initial CRLF characters are permitted

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, before reading the first request-line, HttpObjectDecoder skips every byte for which Character.isISOControlb is true 0x00–0x1F and 0x7F as well as all...

CVE-2026-50020

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, before reading the first request-line, "HttpObjectDecoder" skips every byte for which "Character.isISOControlb" is "true" 0x00–0x1F and 0x7F as well as all...

CVE-2026-50020

Netty (network framework) contains a flaw in HttpObjectDecoder: prior to reading the first request-line, it ignores all ISO control bytes (0x00–0x1F, 0x7F) plus whitespace, beyond what RFC 9112 allows. This can cause request-boundary confusion in pipelined or multiplexed transports. Affects Netty...

CVE-2026-50020 Netty's HttpObjectDecoder skips arbitrary initial control characters when only initial CRLF characters are permitted

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, before reading the first request-line, HttpObjectDecoder skips every byte for which Character.isISOControlb is true 0x00–0x1F and 0x7F as well as all...