Security Bulletin: IBM Watson Discovery Cartridge affected by vulnerability in netty-codec-http-4.1.135.Final.jar

Summary IBM Watson Discovery Cartridge affected by vulnerability in netty-codec-http-4.1.135.Final.jar Vulnerability Details CVEID:CVE-2026-59899 DESCRIPTION: Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, HttpContentEncoder...

Security Bulletin: IBM DevOps Deploy / IBM UrbanCode Deploy (UCD) is susceptible to multiple Netty vulnerabilities (CVE-2026-59899, CVE-2026-59921)

Summary Netty is used by IBM DevOps Deploy / IBM UrbanCode Deploy UCD as part of the server-agent communication systems. CVE-2026-59899, CVE-2026-59921. Vulnerability Details CVEID:CVE-2026-59899 DESCRIPTION: Netty is an asynchronous, event-driven network application framework. Prior to versions...

PT-2026-82358

Name of the Vulnerable Software and Affected Versions Reactor Netty versions 1.0.0 through 1.0.52 Reactor Netty versions 1.1.0 through 1.2.18 Reactor Netty versions 1.3.0 through 1.3.6 Description An issue exists where the Reactor Netty HTTP server consumes an excessive amount of memory when a...

EUVD-2026-50443

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, HttpContentEncoder the superclass of the production handler HttpContentCompressor maintains a per-channel ArrayDeque named acceptEncodingQueue that accumulates attacker-controll...

CVE-2026-59899 Netty HttpContentEncoder: Unbounded Per-Connection Queue Growth via HTTP/1.1 Pipelining Leads to Denial of Service

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, HttpContentEncoder the superclass of the production handler HttpContentCompressor maintains a per-channel ArrayDeque named acceptEncodingQueue that accumulates attacker-controll...

CVE-2026-59899

CVE-2026-59899 in Netty affects the HttpContentEncoder (superclass of HttpContentCompressor) before 4.1.136.Final and 4.2.16.Final. A per-channel ArrayDeque named acceptEncodingQueue accumulates attacker-controlled data with no size limit, filled on the I/O thread for every inbound HTTP request a...

CVE-2026-59899 Netty HttpContentEncoder: Unbounded Per-Connection Queue Growth via HTTP/1.1 Pipelining Leads to Denial of Service

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, HttpContentEncoder the superclass of the production handler HttpContentCompressor maintains a per-channel ArrayDeque named acceptEncodingQueue that accumulates attacker-controll...

Linux Distros Unpatched Vulnerability : CVE-2026-59899

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 versions 4.1.136.Final and 4.2.16.Final, HttpContentEncoder the superclass of the...

Security update for python-aiohttp

This update for python-aiohttp fixes the following issues: CVE-2026-50269: improper validation of user-controlled strings allows for CRLF injection in multipart headers bsc1268398. CVE-2026-54273: no limit in the HTTP/1 pipelined request queue can lead to excessive resource consumption bsc1268543...

Security update for python-aiohttp

This update for python-aiohttp fixes the following issues CVE-2026-22815: insufficient restrictions in header/trailer handling can cause uncapped memory usage and a denial of service bsc1261320. CVE-2026-34513: unbounded DNS cache can cause a excessive memory usage and lead to a denial of service...

Netty: [HttpContentEncoder] Unbounded Per-Connection Queue Growth via HTTP/1.1 Pipelining Leads to Denial of Service

Impact HttpContentEncoder the superclass of the production handler HttpContentCompressor maintains a per-channel ArrayDeque named acceptEncodingQueue that accumulates attacker-controlled data without any size limit. The queue is filled on the I/O thread for every inbound HTTP request and drained...

CVE-2026-16317 Silent Drop of TLS 1.3 Encrypted Records in s2n-tls

Missing validation of the outer contenttype byte on TLS 1.3 encrypted records in s2n-tls allows an active man-in-the-middle to silently discard individual application data records without either endpoint detecting the modification. RFC 8446 Section 5.2 requires that the outer contenttype of all...

CVE-2026-16317

The flaw affects s2n-tls (TLS 1.3) where the outer content_type byte is not covered by the AEAD tag because it is hardcoded in AAD instead of using the wire byte. This allows an active MITM to silently discard individual application_data records without detection, enabling selective suppression o...

SUSE-SU-2026:22819-1 Security update for python-aiohttp

This update for python-aiohttp fixes the following issues - CVE-2026-50269: improper validation of user-controlled strings allows for CRLF injection in multipart headers bsc1268398. - CVE-2026-54273: no limit in the HTTP/1 pipelined request queue can lead to excessive resource consumption...

CVE-2026-54273

A flaw was found in AIOHTTP, an asynchronous HTTP client/server framework for asyncio and Python. An attacker could exploit this vulnerability by sending an unlimited number of pipelined requests, causing the system to consume excessive amounts of memory. This could lead to a Denial of Service Do...

CVE-2026-54273 AIOHTTP: HTTP/1 Pipelined Requests Queue Without Limit

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, no limit was present on the number of pipelined requests that could be queued. An attacker may be able to use pipelined requests to use excessive amounts of memory, potentially leading to DoS. This...

CVE-2026-54273 AIOHTTP: HTTP/1 Pipelined Requests Queue Without Limit

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, no limit was present on the number of pipelined requests that could be queued. An attacker may be able to use pipelined requests to use excessive amounts of memory, potentially leading to DoS. This...

Netty has HttpClientCodec response desynchronization

Summary If HttpClientCodec is configured, there are use cases when a response body from one request, can be parsed as another's. Details HttpClientCodec pairs each inbound response with an outbound request by queue.poll once per response, including for 1xx. If the client pipelines GET then HEAD a...

PT-2026-38376

Name of the Vulnerable Software and Affected Versions Netty versions prior to 4.2.13.Final Netty versions prior to 4.1.133.Final Description In the HttpClientCodec, inbound responses are paired with outbound requests using queue.poll once per response, including for 1xx responses. When HTTP/1.1...

CVE-2026-40396

Varnish Cache 9 before 9.0.1 allows a "workspace overflow" denial of service daemon panic after timeoutlinger. A malicious client could send an HTTP/1 request, wait long enough until the session releases its worker thread timeoutlinger and resume traffic before the session is closed timeoutidle...