Security Bulletin: IBM App Connect Enterprise Certified Container operator and operands are vulnerable to loss of confidentiality (CVE-2026-41242, CVE-2026-4800) and denial of service (CVE-2026-27141)

Summary IBM App Connect Enterprise Certified Container operator and operands are vulnerable to loss of confidentiality CVE-2026-41242, CVE-2026-4800 and denial of service CVE-2026-27141. This bulletin provides patch information to address the reported vulnerabilities in Node.js modules protobufjs...

F5 Networks BIG-IP : BIG-IP HTTP/2 vulnerability (K000159034)

The version of F5 Networks BIG-IP installed on the remote host is prior to 17.1.3.1 / 17.5.1.4 / 21.0.0.1. It is, therefore, affected by a vulnerability as referenced in the K000159034 advisory. When an HTTP/2 profile and an iRule containing theHTTP::redirectorHTTP::respondcommand are configured ...

curl: Use-after-free in `curl_easy_duphandle()` with HTTP/2 stream-dependency tree

Hi all, We've found an issue in lib/easy.c where curleasyduphandle shallow-copies set.priority, so the original and the duplicate end up holding two independent pointer-typed variables that both reference the same heap-allocated Curldataprionode chain. Freeing the chain from one side leaves the...

google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation

A flaw was found in gRPC-Go, the Go language implementation of gRPC. This vulnerability, an authorization bypass, is caused by improper input validation of the HTTP/2 :path pseudo-header. A remote attacker can exploit this by sending raw HTTP/2 frames with a malformed :path that omits the mandato...

google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation

A flaw was found in gRPC-Go, the Go language implementation of gRPC. This vulnerability, an authorization bypass, is caused by improper input validation of the HTTP/2 :path pseudo-header. A remote attacker can exploit this by sending raw HTTP/2 frames with a malformed :path that omits the mandato...

GHSA-PXH5-6RRC-8RJV OpenTofu: Excessive resource usage in "tofu init" when installing dependencies from attacker-controlled server

Impact Unauthenticated denial of service. Summary When installing provider or module packages from attacker-controlled servers, the server may cause tofu initto enter an infinite loop sending garbage data to that server. Those who depend on modules or providers served from untrusted third-party...

Astra Linux – Vulnerability in Jetty9

Jetty is a Java-based web server and servlet engine. An HTTP/2 SSL connection that is established and becomes TCP congested may be leaked when it times out. An attacker can cause many connections to end up in this state, and the server may run out of file descriptors, eventually causing the serve...

Astra Linux – Vulnerability in Golang-1.19

A malicious HTTP/2 client that quickly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is limited by the http2.Server.MaxConcurrentStreams setting, resetting an ongoing request allows the attacker to create a new...

Astra Linux – Vulnerability in Tomcat9

There is a vulnerability in Apache Tomcat when using the APR/Native connector, involving concurrent execution with shared resources and improper synchronization known as “race condition”. This issue is particularly noticeable during client-initiated closures of HTTP/2 connections. This issue...

Astra Linux – Vulnerability in golang-golang-x-net, golang-1.19

A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder, enough to trigger a denial of service due to a small number of small requests...

Astra Linux – Vulnerability in Apache2

HTTP/2 incoming headers that exceed the limit are temporarily buffered in nghttp2 in order to generate an informative HTTP 413 response. If a client continues to send headers, this can lead to memory exhaustion...

Astra Linux – Vulnerability in Netty

Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high-performance protocol servers and clients. In Netty io.netty:netty-codec-http2 before version 4.1.61.Final, there is a vulnerability that allows for request smuggling. This...

Astra Linux – Vulnerabilities in nghttp2, jetty9, netty, tomcat9

The HTTP/2 protocol allows for a denial of service server resource consumption, as request cancellation can quickly reset many streams, as exploited in practice from August to October 2023...

Astra Linux – Vulnerability in golang-golang-x-net

An attacker can cause excessive memory usage in a Go server that accepts HTTP/2 requests. HTTP/2 server connections include a cache of HTTP header keys sent by the client. Although the total number of entries in this cache is limited, an attacker who sends very large keys can cause the server to...

FreeBSD : nginx-devel -- multiple vulnerabilities (1ed77d8e-53bb-11f1-b339-3497f65b111b)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 1ed77d8e-53bb-11f1-b339-3497f65b111b advisory. The nginx project reports: nginx 1.31.0 fixes multiple security issues affecting HTTP/2...

google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation

A flaw was found in gRPC-Go, the Go language implementation of gRPC. This vulnerability, an authorization bypass, is caused by improper input validation of the HTTP/2 :path pseudo-header. A remote attacker can exploit this by sending raw HTTP/2 frames with a malformed :path that omits the mandato...

libsoup: libsoup: Denial of Service via Use-After-Free in HTTP/2 server

A flaw was found in libsoup, a library for handling HTTP requests. This vulnerability, known as a Use-After-Free, occurs in the HTTP/2 server implementation. A remote attacker can exploit this by sending specially crafted HTTP/2 requests that cause authentication failures. This can lead to the...

Exploit for CVE-2026-42945

CVE-2026-42945 PoC Go This tool is designed for detecting a...

FreeBSD : Vinyl/Varnish -- HTTP/2 parsing deficiency (f0f4bb64-52c6-11f1-a1c0-0050569f0b83)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the f0f4bb64-52c6-11f1-a1c0-0050569f0b83 advisory. Vinyl Development Team reports: A deficiency in HTTP/2 request parsing can be exploited to launch a...

ALSA-2026:19353 Important: opentelemetry-collector security update

Collector with the supported components for a AlmaLinux build of OpenTelemetry Security Fixes: net/url: Incorrect parsing of IPv6 host literals in net/url CVE-2026-25679 google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path...