CVE-2026-47774 Envoy vulnerable to HTTP/2 memory exhaustion via cookie header size bypass and HPACK amplification

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.35.11, 1.36.7, 1.37.3, and 1.38.1, a vulnerability in Envoy's HTTP/2 downstream request processing allows an unauthenticated remote client to trigger excessive memory consumption, potentiall...

Important: Red Hat Security Advisory: Red Hat build of Quarkus 3.33.2.SP1 security update

An update is now available for Red Hat build of Quarkus. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability. For more informatio...

netty-codec-http2: netty-codec-http2: Denial of Service due to resource leak

A flaw was found in netty-codec-http2. A remote attacker could send specially crafted frames that cause a resource leak within the DelegatingDecompressorFrameListener class. This resource leak could lead to an Out Of Memory Error OOME, potentially causing a Denial of Service DoS by taking down th...

dotnet: SocketsHttpHandler Http2Connection - HTTP/2 SETTINGS/PING ACK flood causing OOM

.NET Denial of Service Vulnerability - HTTP/2 SETTINGS/PING ACK flood causing OOM...

CVE-2026-42055

NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpproxyv2module and ngxhttpgrpcmodule modules. This vulnerability exists when the proxyhttpversion to 2 or grpcpass directives are used to proxy HTTP/2 traffic, the ignoreinvalidheaders directive is set to off, and the...

Security Bulletin: Vulnerability in gRPC-Go bundled with IBM Fusion, IBM Fusion HCI, and IBM Fusion Content-Aware Storage

Summary IBM Fusion, IBM Fusion HCI, and IBM Fusion Content-Aware Storage include the gRPC-Go library, which is vulnerable to an authorization bypass. This issue is caused by improper input validation of the HTTP/2 :path pseudo-header. The gRPC-Go server incorrectly accepted requests where the...

SUSE 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...

Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : ADSys vulnerabilities (USN-8430-1)

The remote Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8430-1 advisory. It was discovered that ADSys did not properly handle certain HTTP/2 frames. A remote attacker could possibly...

USN-8398-3 nginx vulnerability

USN-8398-1 fixed a vulnerability in nginx. The update caused a regression and was temporarily reverted in USN-8398-2. This update introduces a complete fix for CVE-2026-49975. We apologize for the inconvenience. Original advisory details: It was discovered that nginx incorrectly handled certain...

SUSE SLES15 Security Update : kubernetes1.28 (SUSE-SU-2026:2344-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2344-1 advisory. Security fixes: - CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport when given bad SETTINGSMAXFRAMESIZE...

SUSE SLES15 Security Update : google-cloud-sap-agent (SUSE-SU-2026:2372-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2026:2372-1 advisory. This update for google-cloud-sap-agent fixes the following issue - CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport...

SUSE SLED15 / SLES15 Security Update : libsoup (SUSE-SU-2026:2314-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2314-1 advisory. This update for libsoup fixes the following issues - CVE-2026-1801: HTTP Request Smuggling in...

SUSE SLES15 Security Update : kubernetes (SUSE-SU-2026:2342-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2342-1 advisory. This update for kubernetes fixes the following issues - CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport...

SUSE SLES15 Security Update : kubernetes1.25 (SUSE-SU-2026:2345-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2345-1 advisory. Security fixes: - CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport when given bad SETTINGSMAXFRAMESIZE...

SUSE SLES12 Security Update : google-cloud-sap-agent (SUSE-SU-2026:2348-1)

The remote SUSE Linux SLES12 / SLESSAP12 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2026:2348-1 advisory. This update for google-cloud-sap-agent fixes the following issue - CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport...

CVE-2026-48043

A flaw was found in netty-codec-http2. A remote attacker could send specially crafted frames that cause a resource leak within the DelegatingDecompressorFrameListener class. This resource leak could lead to an Out Of Memory Error OOME, potentially causing a Denial of Service DoS by taking down th...

RLSA-2026:25225 Important: mod_http2 security update

The modh2 Apache httpd module implements the HTTP2 protocol h2+h2c on top of libnghttp2 for httpd 2.4 servers. Security Fixes: httpd: HTTP/2: Remote Denial of Service via compression bomb and Slowloris-style attack CVE-2026-49975 For more details about the security issues, including the impact, a...

mod_http2 security update

An update is available for modhttp2. This update affects Rocky Linux 10. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The modh2 Apache httpd module implements the HTTP2 protocol h2+h2c on top o...

CVE-2026-12043 Heap double-free in AWS Common Runtime aws-c-http

Improper handling of HPACK dynamic table size updates in the AWS Common Runtime aws-c-http library might allow a remote threat actor operating a server to cause memory corruption on a connecting client application, potentially leading to arbitrary code execution, via a crafted sequence of HTTP/2...

Allocation of Resources Without Limits or Throttling

Overview io.netty:netty-codec-http2 is a HTTP2 sub package for the netty library, an event-driven asynchronous network application framework. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the handling of the SETTINGSMAXHEADERLISTSIZE...