CVE-2026-49975-POC

CVE-2026-49975 — HTTP/2 Bomb PoC Proof-of-concept exploit for CVE-2026-49975, a remote denial-of-service vulnerability in HTTP/2 server implementations. Discovered by Quang Luong Calif Security Research, disclosed June 2, 2026. For authorized security testing only. Do not use against infrastructu...

CVE-2026-49975-HTTP-2-Bomb

A triage not exploitation tool to identify attack surfaces exposed to CVE-2026-49975 — "HTTP/2 Bomb". ⚠️ This script does not send attack payloads. It only makes normal HTTP requests and analyzes response headers to flag hosts that warrant manual version/patch verification. About CVE-2026-49975...

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-2026-49975

CVE-2026-49975 HTTP/2 Bomb ★ CVE-2026-49975 HTTP/2 Bomb PoC ★ Overview CVE-2026-49975 is a Denial of Service DoS vulnerability in Apache HTTP Server. The vulnerability occurs in the HTTP/2 request handling path, where multiple cookie header fields can be merged without being properly counted...

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

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

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...

Proof-of-Concept-POC---CVE-2026-49975-HTTP-2-Bomb-

CVE-2026-49975 - HTTP/2 Bomb Proof of Concept Description CVE-2026-49975, also known as HTTP/2 Bomb , is a remote denial-of-service DoS vulnerability that affects most major web servers in their default HTTP/2 configuration. The vulnerability was discovered by OpenAI Codex by combining two...

http2-bomb-detector

http2-bomb-detector HTTP/2 Bomb CVE-2026-49975 Non-destructive vulnerability detection tool — for Nginx / Apache httpd Vulnerability Background CVE-2026-49975 is a widespread remote denial-of-service vulnerability in the HTTP/2 protocol layer, discovered by security researcher Quang Luong. This...

CVE-2026-49975

CVE-2026-49975 HTTP/2 Bomb PoC HTTP/2 Remote Denial of Service Vulnerability Replication Tool Vulnerability Overview CVE-2026-49975 is an HTTP/2 denial of service vulnerability affecting major web servers. The vulnerability was discovered by security company Calif using OpenAI Codex in early June...

CVE-2026-49975

CVE-2026-49975 HTTP/2 Bomb Exploit Tool Author : polar bear Version : 2.1 Applicable Vulnerability : CVE-2026-49975 HTTP/2 Protocol Memory Bomb 📖 Vulnerability Principle CVE-2026-49975 is a memory exhaustion vulnerability in the HTTP/2 protocol implementation. The attack chain consists of two key...

http2-bomb

HTTP/2 Bomb - CVE-2026-49975 A denial-of-service DoS proof of concept targeting HTTP/2 servers. By combining HPACK amplification with stream retention, a single machine with a modest network connection can render a vulnerable server unavailable within seconds. Vulnerability CVE: CVE-2026-49975...

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...

http2-bomb-analysis-paper

HTTP/2 Bomb: HPACK Indexed-Reference Amplification Chain Attack A high school student's independent technical deep-dive June 2026 TL;DR This repository contains my complete analysis of the HTTP/2 Bomb vulnerability CVE-2026-49975 / CVE-2026-47774, which chains two decades-old HTTP/2 primitives:...

cve-2026-49975-http2bomb_reproduction

CVE-2026-49975 HTTP/2 Bomb Complete Reproduction Guide Based on QiAnXin CERT Advisory + Calif Original Research ================================================================ I. Vulnerability Overview CVE-2026-49975 is a critical denial-of-service DoS vulnerability in HTTP/2 server and proxy...

CVE-2025-53020-PoC

CVE-2025-53020 - Apache httpd HTTP/2 内存耗尽 PoC 一个针对 CVE-2025-53020 的概念验证程序，该漏洞是 Apache httpd 的 HTTP/2 实现中的一个内存耗尽漏洞，由我在 2025 年中发现。 📖 深度解读 : galbarnahum.com/posts/apache-httpd-cve-2025-53020 漏洞概述 Apache httpd 在处理 HTTP/2 标头时容易受到拒绝服务攻击。该漏洞是由于在 HTTP/2 请求中处理重复的标头名称时产生了不必要的内存重复。 攻击机制 1. HPACK 利用 : 攻击利用...

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...

Amazon Linux 2023 : nginx, nginx-all-modules, nginx-core (ALAS2023-2026-2130)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-2130 advisory. 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...

Updated python-hpack packages fix a security vulnerability

An issue was found in the python-hyper/hpack library, most commonly used as a downstream dependency of the python-hyper/h2 library an HTTP/2 client and server implementation. Unbounded variable integer decoding can cause run-away computation on malformed input leading to On^2 runtime, effectively...

MGASA-2026-0349 Updated python-hpack packages fix a security vulnerability

An issue was found in the python-hyper/hpack library, most commonly used as a downstream dependency of the python-hyper/h2 library an HTTP/2 client and server implementation. Unbounded variable integer decoding can cause run-away computation on malformed input leading to On^2 runtime, effectively...