CVE-2026-73550 Envoy: HTTP/2 Discarded Host Header 200 GB Header-Copy OOM in Envoy

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy copies every decoded HTTP/2 Host header value before discarding it when :authority is already present. The discarded value bypasses saveHeader, so its bytes a...

CVE-2026-73550: Missing Release of Memory after Effective Lifetime

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy copies every decoded HTTP/2 Host header value before discarding it when :authority is already present. The discarded value bypasses saveHeader, so its bytes a...

Exploit for Improper Handling of Highly Compressed Data (Data Amplification) in Apache Http_Server

!Go Versionhttps://img.shields.io/badge/Go-1.26%2B-00ADD8?lo...

Linux Distros Unpatched Vulnerability : CVE-2026-19773

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute...

CVE-2026-19773

libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of libwebsockets. Authentication is not required to exploit this vulnerability. The specific flaw...

DEBIAN-CVE-2026-19773

libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of libwebsockets. Authentication is not required to exploit this vulnerability. The specific flaw...

UBUNTU-CVE-2026-19773

libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of libwebsockets. Authentication is not required to exploit this vulnerability. The specific flaw...

CVE-2026-19773

libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of libwebsockets. Authentication is not required to exploit this vulnerability. The specific flaw...

CVE-2026-19773 libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of libwebsockets. Authentication is not required to exploit this vulnerability. The specific flaw...

EUVD-2026-79130

libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of libwebsockets. Authentication is not required to exploit this vulnerability. The specific flaw...

CVE-2026-19773 libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of libwebsockets. Authentication is not required to exploit this vulnerability. The specific flaw...

CVE-2026-19773

CVE-2026-19773 is a remote code execution vulnerability in libwebsockets , caused by improper validation of user-supplied data during parsing of the HTTP/2 HPACK path header , resulting in an out-of-bounds write past the end of an allocated buffer. The flaw allows an unauthenticated remote attack...

CVE-2026-19773

libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of libwebsockets. Authentication is not required to exploit this vulnerability. The specific flaw...

CVE-2026-19773 libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of libwebsockets. Authentication is not required to exploit this vulnerability. The specific flaw...

Security Bulletin: Denial of Service Security Vulnerability in Apache HttpComponents Core affects IBM Sterling B2B Integrator and IBM Sterling File Gateway (CVE-2026-54428)

Summary IBM Sterling B2B Integrator and IBM Sterling File Gateway have addressed the security vulnerability Vulnerability Details CVEID:CVE-2026-54428 DESCRIPTION: Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core 5.4.2 and earlier,...

CVE-2026-19773: Out-of-bounds Write

libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of libwebsockets. Authentication is not required to exploit this vulnerability. The specific flaw...

Astra Linux – Vulnerability in Node.js

A malformed HTTP/2 HEADERS frame with oversized, invalid HPACK data can cause Node.js to crash by triggering an unhandled TLSSocket error ECONNRESET. Instead of safely closing the connection, the process crashes, enabling a remote denial of service. This primarily affects applications that do not...

Astra Linux – Vulnerability in qtbase-opensource-src

A issue was discovered in the HTTP2 implementation in Qt before 5.15.17, 6.x before 6.2.11, 6.3.x through 6.5.x before 6.5.4, and 6.6.x before 6.6.2. There is an incorrect HPack integer overflow check in network/access/http2/hpacktable.cpp...

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...

Important: nginx

Issue Overview: An HTTP/2 denial of service vulnerability was found in nginx. Prior to the fix, there was no limit on the number of request headers a client could send. An attacker could seed the HPACK dynamic table with a header, then emit thousands of indexed references that each cost significa...