Debian dsa-6558 : curl - security update

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6558 advisory. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6558-1 [email protected] https://www.debian.org/securit...

http2-rst-stream-attacker

CVE-2023-44487 and http2-rst-stream-attacker CVE-2023-44487 CVE-2023-44487 is an exploit against the HTTP2 protocol itself. In HTTP2, requests for data are initiated by sending a HEADERS frame. After receiving this frame, a server will start processing your request, subsequently sending DATA fram...

CVE-2026-23918-poc

CVE-2026-23918 — Apache modhttp2 Double Free Affected: Apache HTTP Server 2.4.66 with modhttp2 + Event MPM Fixed in: Apache 2.4.67 modh2 v2.0.37 CVSS 3.1: 8.8 HIGH — Unauthenticated Remote Code Execution possible CWE: CWE-415 Double Free What's the vulnerability modhttp2 in Apache 2.4.66 has a...

CVE-2023-44487-dos

CVE-2023-44487 HTTP/2 Rapid Reset There are some examples in this repo which are not tested completely to analyse the impact, but I just wanted to perform the concept of this attack starting many streams and immediately sending RSTSTREAM frame to avoid reaching MAXCONCURRENTSTREAMS. I use H2Space...

CVE-2023-44487-HTTP-2-Rapid-Reset-Exploit-PoC

CVE-2023-44487 - HTTP/2 Rapid Reset Checker PoC Descriptions This main is a Proof of Concept PoC for CVE-2023-44487 , also known as the HTTP/2 Rapid Reset Attack. The vulnerability allows attackers to perform a Denial of Service DoS attack by rapidly sending RSTSTREAM frames over HTTP/2...

cve-2023-44487-POC

cve-2023-44487 - http/2 rapid reset attack by 7pirqte what is this poc for the http/2 rapid reset attack. basically you open a stream with HEADERS frame then immediatly send RSTSTREAM to cancel it. server does all the work setting up and tearing down streams while you just spam requests. the...

MadeYouReset_Tester

MadeYouReset Checker A lightweight Python script to detect whether a web server is potentially vulnerable to the MadeYouReset HTTP/2 denial-of-service vulnerability — tracked as CVE-2025-8671 CVSS 7.5 High. Background MadeYouReset is an HTTP/2 DoS vulnerability disclosed in August 2025 by...

CVE-2026-23918-Apache-H2-PoC

CVE-2026-23918-Apache-H2-PoC This is a proof-of-concept exploit for the double-free vulnerability in Apache's modhttp2 CVE-2026-23918. It's a nasty bug that hits the h2mplx.c stream cleanup path. Basically, if you time it right, you can get the server to try and clean up the same stream twice,...

rapidresetclient

Rapid Reset Client Rapid Reset Client è uno strumento per testare le mitigazioni e l'esposizione a CVE-2023-44487 vettore di attacco DDoS Rapid Reset. Implementa un client HTTP/2 minimale che apre un singolo socket TCP, negozia TLS, ignora il certificato e scambia frame SETTINGS. Il client invia...

AlmaLinux 9.2 [TuxCare] Security Update: libnghttp2 / libnghttp2-devel / nghttp2 Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1778129164)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1778129164 advisory. - Envoy is a cloud-native high-performance edge/middle/service proxy. Envoy's HTTP/2 codec may leak a header map and bookkeeping...

Rocky Linux 9.6 [TuxCare] Security Update: libnghttp2 / libnghttp2-devel / nghttp2 (ALMALINUX9.6:CLSA-2026:1778148827)

The Rocky Linux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1778148827 advisory. - Envoy is a cloud-native high-performance edge/middle/service proxy. Envoy's HTTP/2 codec may leak a header map and bookkeeping structures...

AlmaLinux 9.6 [TuxCare] Security Update: libnghttp2 / libnghttp2-devel / nghttp2 (ALMALINUX9.6:CLSA-2026:1778148827)

The AlmaLinux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1778148827 advisory. - Envoy is a cloud-native high-performance edge/middle/service proxy. Envoy's HTTP/2 codec may leak a header map and bookkeeping structures...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: nghttp2 (UTSA-2023-002139)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2023-002139 advisory. Envoy is a cloud-native high-performance edge/middle/service proxy. Envoys HTTP/2 codec may leak a header map and bookkeeping structures upon receiving RSTSTREAM...

curl: CVE-2026-92392: HTTP/2 upload Use-After-Free

Summary: During a file upload, curl mishandles HTTP/2 RSTSTREAM received from the server with reason HTTP11REQUIRED or REFUSEDSTREAM leading to a use after free of a struct Curleasy object. The control flow is a bit complicated, so I've produced an ASCII tree of the control flow to highlight the...

Linux Distros Unpatched Vulnerability : CVE-2026-12611

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A client may issue HTTP/2 requests to a Jetty server that result in blocking writes that are never unblocked, eventually causing all threads to be blocked and t...

SUSE CVE-2026-12611

A client may issue HTTP/2 requests to a Jetty server that result in blocking writes that are never unblocked, eventually causing all threads to be blocked and the whole server to become unresponsive. This is caused by a race condition in the server when handling RSTSTREAM frames and GOAWAY frames...

Missing Release of Resource after Effective Lifetime

Overview Affected versions of this package are vulnerable to Missing Release of Resource after Effective Lifetime due to a race condition in the server when handling RSTSTREAM and GOAWAY frames. An attacker can cause the server to become unresponsive by sending specially crafted HTTP/2 requests...

DEBIAN-CVE-2026-12611

A client may issue HTTP/2 requests to a Jetty server that result in blocking writes that are never unblocked, eventually causing all threads to be blocked and the whole server to become unresponsive. This is caused by a race condition in the server when handling RSTSTREAM frames and GOAWAY frames...

CVE-2026-12611

A client may issue HTTP/2 requests to a Jetty server that result in blocking writes that are never unblocked, eventually causing all threads to be blocked and the whole server to become unresponsive. This is caused by a race condition in the server when handling RSTSTREAM frames and GOAWAY frames...

CVE-2026-12611

A client may issue HTTP/2 requests to a Jetty server that result in blocking writes that are never unblocked, eventually causing all threads to be blocked and the whole server to become unresponsive. This is caused by a race condition in the server when handling RSTSTREAM frames and GOAWAY frames...