h2spacex

H2SpaceX Librería de bajo nivel HTTP/2 basada en Scapy que puede utilizarse para Single Packet Attack Race Condition en H2 Esta librería formó parte de una investigación académica con el título de QUIC-er Races: HTTP/3 won’t save you from TOCTOU vulnerabilities. Sumérgete en el artículo de Single...

CVE-2026-49975

CVE-2026-49975 HTTP/2 Bomb ★ CVE-2026-49975 HTTP/2 Bomb PoC ★ 概述 CVE-2026-49975 是 Apache HTTP Server 中的一个拒绝服务（DoS）漏洞。 该漏洞出现在 HTTP/2 请求处理路径中，多个 cookie 头字段可以在不经过 LimitRequestFields 正确计数的情况下合并。 通过发送一个小的 HPACK 编码的 HTTP/2 请求，该请求扩展成多个 cookie 头字段，攻击者可以强制服务器在 Cookie 头合并过程中反复分配内存。 攻击者随后可利用 HTTP/2...

USN-8890-1: libsoup vulnerabilities

It was discovered that libsoup incorrectly handled certain HTTP/2 requests. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. CVE-2026-4271 It was discovered that libsoup incorrectly handled certain HTTPS...

net/http: golang: Go net/http: Unencrypted HTTP/2 connections vulnerable to Denial of Service

A flaw was found in the net/http component of the Go standard library. When a server is configured to support unencrypted HTTP/2, it reads initial bytes from new connections to detect the HTTP/2 client preface. However, the ReadHeaderTimeout is not correctly applied during this process. This...

net/http: golang: Go net/http: Unencrypted HTTP/2 connections vulnerable to Denial of Service

A flaw was found in the net/http component of the Go standard library. When a server is configured to support unencrypted HTTP/2, it reads initial bytes from new connections to detect the HTTP/2 client preface. However, the ReadHeaderTimeout is not correctly applied during this process. This...

Important: Red Hat Security Advisory: OpenShift Container Platform 4.22.17 packages and security update

Red Hat OpenShift Container Platform release 4.22.17 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red Hat OpenShift Container Platform 4.22. Red Hat Product Security has rated this update as having a...

CVE-2023-44487-dos

CVE-2023-44487 HTTP/2 Rapid Reset Hay algunos ejemplos en este repositorio que no están probados completamente para analizar el impacto, pero solo quería llevar a cabo el concepto de este ataque iniciar muchos flujos y enviar inmediatamente la trama RSTSTREAM para evitar alcanzar...

undertow: Undertow MadeYouReset HTTP/2 DDoS Vulnerability

A flaw was found in Undertow where malformed client requests can trigger server-side stream resets without triggering abuse counters. This issue, referred to as the "MadeYouReset" attack, allows malicious clients to induce excessive server workload by repeatedly causing server-side stream aborts...

OPENSUSE-SU-2026:22026-1 Security update for prometheus-blackbox_exporter

This update for prometheus-blackboxexporter fixes the following issues: Changes in prometheus-blackboxexporter: - CVE-2026-84304: Fix heap memory exhaustion OOM via HTTP/2 DATA frame fragmentation in gRPC-Go by bumping it to version 1.83.1 bsc1279126 - CVE-2026-39821: Fix potential validation...

http2-bomb-detector

http2-bomb-detector HTTP/2 Bomb CVE-2026-49975 非破坏性漏洞检测工具 — 针对 Nginx / Apache httpd 漏洞背景 CVE-2026-49975 是一个影响广泛的 HTTP/2 协议层远程拒绝服务漏洞，由安全研究员 Quang Luong 发现。该漏洞利用 HPACK 头部压缩 和 流控制机制 的组合性设计缺陷，攻击者无需身份验证即可在 10-20 秒内耗尽服务器 32GB 内存。 CVSS 3.1 : 9.8（高危） CWE : CWE-789 Memory Allocation with Excessive Size...

USN-8869-1 rabbitmq-server vulnerability

It was discovered that RabbitMQ Server incorrectly handled certain HTTP/2 headers. An attacker could possibly use this issue to cause a denial of service via memory exhaustion...

USN-8869-1: RabbitMQ Server vulnerability

It was discovered that RabbitMQ Server incorrectly handled certain HTTP/2 headers. An attacker could possibly use this issue to cause a denial of service via memory exhaustion...

Security update for docker-stable

This update for docker-stable fixes the following issues: CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper validation of the HTTP/2 :path pseudo- header bsc1260279. CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport when given bad...

io.netty/netty-codec-http2: Netty: Denial of Service via HTTP/2 DATA frame memory leak

A flaw was found in Netty, a network application framework. A remote, unauthenticated attacker can exploit this vulnerability by sending specially crafted HTTP/2 DATA frames to applications that use Netty and have HTTP/2 content decompression enabled. This can lead to memory exhaustion, causing t...

CVE-2026-49975

CVE-2026-49975 HTTP/2 Bomb PoC HTTP/2 远程拒绝服务漏洞复现工具 漏洞概述 CVE-2026-49975 是一个影响主流 Web 服务器的 HTTP/2 拒绝服务漏洞。该漏洞由安全公司 Calif（使用 OpenAI Codex）于 2026 年 6 月初发现。 攻击原理 1. HPACK 压缩炸弹 ：将极小的 header（如 "x: a"）插入服务器 HPACK 动态表，然后发送成千上万个 1-byte 的索引引用。每个引用迫使服务器分配大量簿记内存，但客户端只消耗极少带宽。内存放大比例可达 5700:1 （Envoy）和 4000:1 （Apac...

CVE-2026-49975

CVE-2026-49975 HTTP/2 Bomb 复现工具 作者 ：polar bear 版本 ：2.1 适用漏洞 ：CVE-2026-49975（HTTP/2 协议内存炸弹） 📖 漏洞原理 CVE-2026-49975 是 HTTP/2 协议实现中的内存耗尽漏洞，攻击链包含两个关键步骤： 1. HPACK 压缩炸弹 ：在单个 HTTP/2 流中重复发送相同头部（如 x-bomb: test），迫使服务器为每次引用分配完整的内存结构，实现 4000:1 以上的内存放大 。 2. 窗口停滞 ：将初始流控窗口设为 0，阻止服务器发送响应，导致已分配的内存被永久锁定，无法释放。...

CVE-2026-33186

CVE-2026-33186 Bypass de la política de autorización RBAC de gRPC-Go mediante la ausencia de la barra inicial en :path Bypass de autenticación Descripción El paquete authz de google.golang.org/grpc implementa la autorización RBAC a nivel de SDK mediante reglas de denegación y de permiso que se...

rapid-reset-check

Rapid Reset Check rapid-reset-check is a small Go CLI for quickly inventorying HTTPS endpoints that expose HTTP/2 and therefore need a CVE-2023-44487 mitigation review. The scanner is deliberately non-exploitative. It resolves each target, opens a certificate-verified TLS connection, offers h2 an...

CVE-2024-27316

CVE-2024-27316 Decidí llamar a esta vulnerabilidad específicamente "CVE-2024-27316" ya que la he probado contra esta vulnerabilidad. El fallo subyacente afecta a otros CVE, así que pensé en mencionarlos con la esperanza de que otros puedan probar y modificar este PoC : Este PoC actualmente solo...

CLEANSTART-2026-XZ10656 Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core (5

Security vulnerability affects the sonarqube package. Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core 5...