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:...

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...

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

CVE-2026-49975 HTTP/2 Bomb ★ CVE-2026-49975 HTTP/2 Bomb PoC ★ https://github.com/user-attachments/assets/89310771-f704-45d1-a6c3-d910de1dbc74 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...

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...

GHSA-CJCG-CXMH-9WCR Praxis affected by HTTP/2 Bomb

Summary Multiple denial-of-service vulnerabilities have been discovered in HTTP/2 server implementations. All have been rated with a severity impact of Important. The vulnerabilities target HPACK, the header compression scheme in HTTP/2, where a small request can trigger large memory allocations ...

hpack: Unbounded variable integer decoding can cause run-away computation on malformed input

ImpactUsers of the python-hyper/hpack library, most commonly used as 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 blocking...

CVE-2025-53020-PoC

CVE-2025-53020 - Apache httpd HTTP/2 メモリ枯渇 PoC CVE-2025-53020 の実証コードです。2025年半ばに発見した、Apache httpd の HTTP/2 実装におけるメモリ枯渇脆弱性です。 📖 詳細解説 : galbarnahum.com/posts/apache-httpd-cve-2025-53020 脆弱性の概要 Apache httpd は、HTTP/2 ヘッダー処理を介したサービス拒否攻撃に対して脆弱です。この脆弱性は、HTTP/2...

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...

POC-CVE-2026-49975

-red CVE-2026-49975 HTTP/2 Bomb — HPACK Compression Bomb + Flow-Control Hold PoC Security Research PoC by naheeju ⚠️ This is a working, memory-exhaustion DoS tool — not a toy. It opens streams that force the target to allocate memory and holds them open via HTTP/2 flow-control tricks. As long as...

CLEANSTART-2026-YJ27178 hpack is an HTTP/2 Header Encoding for Python

Security vulnerability affects the py3-hpack package. hpack is an HTTP/2 Header Encoding for Python...

Rocky Linux 9 [CIQ] Security Update: haproxy / haproxy-debuginfo / haproxy-debugsource Multiple Vulnerabilities (crlsa-2026_55772)

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202655772 advisory. haproxy: HAProxy: Denial of Service via HPACK dynamic table insertions CVE-2026-55204 haproxy: HAProxy: Response smuggling due to integer overflow in...

Rocky Linux 10.2 [CIQ] Security Update: haproxy / haproxy-debuginfo / haproxy-debugsource Multiple Vulnerabilities (crlsa-2026_55679)

The Rocky Linux 10.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202655679 advisory. haproxy: HAProxy: Denial of Service via HPACK dynamic table insertions CVE-2026-55204 haproxy: HAProxy: Response smuggling due to integer overflow in...

AlmaLinux 9.2 [TuxCare] Security Update: haproxy (ALMALINUX9.2:CLSA-2026:1783527210)

The AlmaLinux 9.2 host has a package installed that is affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1783527210 advisory. - HAProxy through 3.4.0, fixed in commit 9a6d1fe, contains a null pointer dereference vulnerability in hpackdhtinsert within src/hpack-tbl.c...

AlmaLinux 9.6 [TuxCare] Security Update: haproxy (ALMALINUX9.6:CLSA-2026:1782820521)

The AlmaLinux 9.6 host has a package installed that is affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1782820521 advisory. - HAProxy through 3.4.0, fixed in commit 9a6d1fe, contains a null pointer dereference vulnerability in hpackdhtinsert within src/hpack-tbl.c...

Rocky Linux 8 [CIQ] Security Update: haproxy / haproxy-debuginfo / haproxy-debugsource (crlsa-2026_55859)

The Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-202655859 advisory. haproxy: HAProxy: Denial of Service via HPACK dynamic table insertions CVE-2026-55204 Tenable has extracted the preceding description block directly from the CIQ...

AlmaLinux 9.2 [TuxCare] Security Update: containernetworking-plugins Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2025:1762538558)

The AlmaLinux 9.2 host has a package installed that is affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2025:1762538558 advisory. - A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder, sufficient to cause a denial of...

CentOS Linux 8.5 [TuxCare] Security Update: haproxy (CENTOS8.5:CLSA-2026:1782825734)

The CentOS Linux 8.5 host has a package installed that is affected by a vulnerability as referenced in the TuxCare CENTOS8.5:CLSA-2026:1782825734 advisory. - HAProxy through 3.4.0, fixed in commit 9a6d1fe, contains a null pointer dereference vulnerability in hpackdhtinsert within src/hpack-tbl.c...

AlmaLinux 9.2 [TuxCare] Security Update: qt5-qtbase / qt5-qtbase-common / qt5-qtbase-devel / etc (ALMALINUX9.2:CLSA-2025:1762191563)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2025:1762191563 advisory. - An 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...

[SECURITY] [DSA 6529-1] libwebsockets security update

------------------------------------------------------------------------- Debian Security Advisory DSA-6529-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff September 29, 2026 https://www.debian.org/security/faq -...