CVE-2026-56848

CVE-2026-56848 affects Node.js 22.x/24.x/26.x. The vulnerability arises from a heap-use-after-free caused by re-entrant nghttp2_session_mem_send() during nghttp2_session_mem_recv(). OSV/OpenSUSE entries show fixes: nodejs26-26.5.1-1.1 and corepack24-24.18.1-1.1 in GA media, with additional OSV De...

RHCOS 4 : OpenShift Container Platform 4.15.67 (RHSA-2026:43225)

The remote Red Hat Enterprise Linux CoreOS 4 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:43225 advisory. - google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation...

GHSA-Q3G2-M552-3R9C swift-nio-http2: Missing CR/LF/NUL validation in header values

Summary SwiftNIO HTTP/2 was missing validation on inbound HEADERS frames that let CR, LF, NUL, SP and other control characters reach an HTTP/1.1 backend through NIOHTTP2's HTTP/2-to-HTTP/1 codec, enabling HTTP request smuggling or response splitting. Impact Two related gaps in inbound header...

CVE-2026-44909

Proxygen lacked a generalized slow-consumer detection mechanism in its core HTTP session layer. A remote, unauthenticated attacker could exploit HTTP/2 flow-control by setting SETTINGSINITIALWINDOWSIZE to 0 or withholding WINDOWUPDATE frames, causing the server to buffer complete response bodies ...

SUSE CVE-2026-56819

Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, a remote unauthenticated peer can leak one direct ByteBuf per HTTP/2 DATA frame in applications that enable HTTP/2 content...

PT-2026-63548

Name of the Vulnerable Software and Affected Versions Netty versions prior to 4.1.136.Final Netty versions prior to 4.2.16.Final Description The HTTP/2-to-HTTP/1.x translation layer, specifically within Http2StreamFrameToHttpObjectCodec and InboundHttp2ToHttpAdapter, fails to deduplicate or...

CVE-2026-54340

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 9265bdd, there is an HTTP/2 state amplification issue that combines HPACK decompression amplification with Slowloris-style stream stalling. Amplified decoded header state can be retained by stalled HTTP/2 streams,...

RockyLinux 8 : nginx:1.24 (RLSA-2026:38847)

The remote RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:38847 advisory. nginx: NGINX: Arbitrary code execution or Denial of Service via heap-based buffer overflow with crafted HTTP/2 headers CVE-2026-42055 Bug Fixes and Enhancements:...

RHEL 8 : nginx:1.24 (RHSA-2026:38847)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:38847 advisory. nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. Security...

AlmaLinux 9 : nginx:1.24 (ALSA-2026:36618)

The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:36618 advisory. nginx: NGINX: Arbitrary code execution or Denial of Service via heap-based buffer overflow with crafted HTTP/2 headers CVE-2026-42055 Bug Fixes and Enhancements:...

AlmaLinux 9 : nginx:1.26 (ALSA-2026:36639)

The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:36639 advisory. nginx: NGINX: Arbitrary code execution or Denial of Service via heap-based buffer overflow with crafted HTTP/2 headers CVE-2026-42055 Bug Fixes and Enhancements:...

AlmaLinux 9 : nginx (ALSA-2026:36331)

The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:36331 advisory. nginx: NGINX: Arbitrary code execution or Denial of Service via heap-based buffer overflow with crafted HTTP/2 headers CVE-2026-42055 Bug Fixes and Enhancements:...

nginx security, bug fix, and enhancement update

An update is available for nginx. 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 nginx is a web and proxy server supporting HTTP and other protocols, with a...

RHEL 9 : nginx (RHSA-2026:36331)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:36331 advisory. nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. Security...

nodejs: Node.js: Denial of Service via unlimited HTTP/2 ORIGIN frames

A flaw was found in Node.js. A malicious server can exploit the HTTP/2 client by sending an unlimited number of ORIGIN frames. This can lead to an Out of Memory error on the client, resulting in a denial of service...

Citrix Patches Six NetScaler Flaws Allowing File Read and Denial-of-Service

Citrix on Tuesday released security updates to address multiple flaws in NetScaler ADC formerly Citrix ADC and NetScaler Gateway formerly Citrix Gateway that could be exploited by an attacker to facilitate arbitrary file reads or trigger a denial-of-service DoS condition. The vulnerabilities are...

ALPINE-CVE-2026-48619

A flaw in Node.js HTTP/2 client allows a server to send an unlimited number of ORIGIN frames, which could lead to an Out of Memory error on the client. This vulnerability affects all supported release lines: Node.js 22, Node.js 24, and Node.js 26...

CVE-2026-48619

A flaw in Node.js HTTP/2 client allows a server to send an unlimited number of ORIGIN frames, which could lead to an Out of Memory error on the client. This vulnerability affects all supported release lines: Node.js 22, Node.js 24, and Node.js 26...

libcurl 7.88.0 < 8.21.0 HTTP/2 Stream-Dependency Tree Use-After-Free

The version of libcurl installed on the remote host is 7.88.0 prior to 8.21.0. It is, therefore, affected by a use-after-free vulnerability: - A use-after-free vulnerability exists in libcurl when an application configures an HTTP/2 stream-dependency tree and subsequently invokes curleasyreset...

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...