CVE-2026-56821

CVE-2026-56821 (Netty) affects Netty’s OcspServerCertificateValidator. Prior to 4.1.136.Final and 4.2.16.Final, it flags an out-of-date OCSP response but does not stop processing, causing an expired GOOD response to be treated as VALID. This can allow an on-path attacker to replay a stale GOOD OC...

CVE-2026-56821 Netty: Out-of-date OCSP Responses Accepted by OcspServerCertificateValidator

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the OcspServerCertificateValidator flags an out-of-date OCSP response but does not stop processing it, so an expired GOOD response is still reported as VALID, letting an on-path...

CVE-2026-59921

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, HttpPostRequestEncoder constructs multipart HTTP request bodies by directly concatenating user-supplied filenames and field names into Content-Disposition MIME headers without...

CVE-2026-59921 Netty: CRLF Injection via Multipart Filename in Netty HttpPostRequestEncoder

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, HttpPostRequestEncoder constructs multipart HTTP request bodies by directly concatenating user-supplied filenames and field names into Content-Disposition MIME headers without...

CVE-2026-59921 Netty: CRLF Injection via Multipart Filename in Netty HttpPostRequestEncoder

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, HttpPostRequestEncoder constructs multipart HTTP request bodies by directly concatenating user-supplied filenames and field names into Content-Disposition MIME headers without...

CVE-2026-59921 Netty: CRLF Injection via Multipart Filename in Netty HttpPostRequestEncoder

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, HttpPostRequestEncoder constructs multipart HTTP request bodies by directly concatenating user-supplied filenames and field names into Content-Disposition MIME headers without...

CVE-2026-59921

CVE-2026-59921 affects Netty’s HttpPostRequestEncoder. Before 4.1.136.Final and 4.2.16.Final, multipart HTTP request bodies were built by directly concatenating user-supplied filenames/field names into Content-Disposition headers without validating CRLF. This allows an attacker-controlled filenam...

EUVD-2026-50089

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, HttpPostRequestEncoder constructs multipart HTTP request bodies by directly concatenating user-supplied filenames and field names into Content-Disposition MIME headers without...

CVE-2026-59921

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, HttpPostRequestEncoder constructs multipart HTTP request bodies by directly concatenating user-supplied filenames and field names into Content-Disposition MIME headers without...

CVE-2026-56745

A flaw was found in Netty. A remote attacker can exploit a vulnerability in the SpdyHttpDecoder handler of Netty's SPDY-to-HTTP codec. When processing a client-initiated SYNSTREAM frame, the decoder fails to release allocated memory if the stream is reset or content limits are exceeded. This...

OPENSUSE-SU-2026:11394-1 netty-4.1.136-1.1 on GA media

These are all security issues fixed in the netty-4.1.136-1.1 package on the GA media of openSUSE Tumbleweed...

PT-2026-66341

These are all security issues fixed in the netty-4.1.136-1.1 package on the GA media of openSUSE Tumbleweed...

CVE-2026-59921

A flaw was found in Netty's HttpPostRequestEncoder, a widely used Java networking library component responsible for constructing multipart HTTP request bodies. The issue arises because user-supplied filenames and field names are directly embedded into Content-Disposition MIME headers without any...

CVE-2026-59920

A flaw was found in the Netty STOMP Streaming Text Oriented Messaging Protocol decoder. This vulnerability allows a remote attacker to inject arbitrary protocol frames by crafting malformed STOMP commands that contain embedded carriage return CR and line feed LF sequences. This bypasses message...

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-2026-59900

A flaw was found in Netty's netty-codec-http2 component. The HTTP/2 encoder does not properly handle special characters in HTTP headers. This vulnerability allows a remote attacker to craft specific HTTP/2 requests, leading to HTTP response splitting and header injection attacks. Such attacks can...

CVE-2026-59898

A flaw was found in netty-codec-http. The WebSocket handshaker in this component fails to properly validate protocol version information during the WebSocket upgrade process. A remote attacker can exploit this vulnerability by manipulating the WebSocket handshake, leading to a bypass of security...

CVE-2026-56821

A flaw was found in netty-handler-ssl-ocsp, a component of the Netty network application framework. The Online Certificate Status Protocol OCSP stapling validator in this component does not properly check certificate revocation status. This can allow an attacker to use revoked certificates withou...

CVE-2026-59901

A flaw was found in the netty-codec-compression component of Netty. This vulnerability, caused by a logic error in the bzip2 decoder, allows a remote attacker to send specially crafted bzip2-compressed data. Processing this malformed data can trigger an infinite loop, causing the decoder thread t...

CVE-2026-59899

A flaw was found in the Netty netty-codec-http component. A remote attacker can send HTTP requests containing highly compressed data. The HTTP decoder in netty-codec-http fails to properly limit the decompression of this content, causing the system to consume excessive memory. This can lead to...