CVE-2026-4253-Scanner

CVE-2026-42530 — Safe-Check Scanner Non-destructive mass scanner for the NGINX HTTP/3 QUIC use-after-free Inventory which of your hosts are exposed — without ever triggering the bug. ⚠️ Disclaimer This tool is for authorized security testing only — your own infrastructure, or systems you have...

CVE-2026-42530

CVE-2026-42530 Scanner for CVE-2026-42530, a use-after-free in nginx's HTTP/3 module. Affected: nginx 1.31.0, 1.31.1 Fixed: nginx 1.31.2 Usage pip install aioquic python3 scannerCVE-2026-42530.py port python3 scannerCVE-2026-42530.py --file hosts.txt How it works Opens two QPACK encoder streams o...

HTTP3-attacks

HTTP3-attacks CVE-2022-30592 Based on the work: E. Chatzoglou, V. Kouliaridis, G. Kambourakis, G. Karopoulos, and S. Gritzalis,"A hands-on gaze on HTTP/3 security through the lens of HTTP/2 and a public dataset", Computers & Security, p. 103051, 2022. The current repository serves the purpose of...

CVE-2026-42530

🛡️ CVE-2026-42530 - Vulnerabilidad de Use-After-Free en NGINX HTTP/3 QUIC Use-After-Free de Alta Gravedad en NGINX HTTP/3 QUIC ⚠️ Vulnerabilidad del Flujo del Codificador QPACK 🔍 Resumen CVE-2026-42530 es una vulnerabilidad de use-after-free en el módulo ngxhttpv3module de NGINX. Un atacante remoto...

ssh3

!NOTE SSH3 probablemente cambiará de nombre. Sigue siendo el Protocolo de Conexión SSH RFC4254 ejecutándose sobre HTTP/3 Extended Connect, pero los cambios necesarios son significativos y demasiado alejados de la filosofía de las implementaciones populares de SSH como para considerar su...

HTTP3ONSTEROIDS

Table of contents Vulnerability Description Source Code Review Lab Setup Identifying the issue References Vulnerability Description HAProxy's HTTP/3 implementation fails to block a malformed HTTP header field name , and when deployed in front of a server that incorrectly process this malformed...

CVE-2026-33555

HTTP Request Smuggling via HAProxy H3/QUIC Standalone FIN Body Validation Bypass Full post here : https://r3verii.github.io/cve/2026/04/14/haproxy-h3-standalone-fin-smuggling.html Summary A vulnerability in HAProxy's HTTP/3 implementation allows an attacker to send an HTTP request with a...

CLEANSTART-2026-WX23354 In Eclipse Jetty, for HTTP/1, HTTP/2 and HTTP/3 requests, there is no strict check that the request authority (host and port) matches what provided in the Host header (if present)

Security vulnerability affects the apache-nifi package. In Eclipse Jetty, for HTTP/1, HTTP/2 and HTTP/3 requests, there is no strict check that the request authority host and port matches what provided in the Host header if present...

HTTP3-Adapter

HTTP/3-Adapter A Burp Suite extension that sends requests over HTTP/3. Burp does not support HTTP/3 natively. This extension implements a HTTP/3 stack, intercepts all requests, converts and sends them over HTTP/3 and then converts the response back into a HTTP version that burp can understand...

Linux Distros Unpatched Vulnerability : CVE-2026-100659

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Netty's HTTP/3 codec io.netty:netty-codec-http3 in versions 4.2.0.Final through 4.2.17.Final does not enforce the RFC 9114 requirement that the :authority...

Linux Distros Unpatched Vulnerability : CVE-2026-100663

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Netty's HTTP/3 codec io.netty:netty-codec-http3 from 4.2.2.Final through 4.2.17.Final does not special- case HTTP/1 CONNECT authority-form request-targets when...

Linux Distros Unpatched Vulnerability : CVE-2026-100661

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Netty's HTTP/3 codec io.netty:netty-codec-http3 versions 4.2.0.Final through 4.2.17.Final contain a denial-of-service vulnerability in the QPACK prefixed-intege...

Linux Distros Unpatched Vulnerability : CVE-2026-100660

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Netty's HTTP/3 codec io.netty:netty-codec-http3 from 4.2.0.Final through 4.2.17.Final retains unbounded per-stream QPACK encoder state. QpackEncoder stores a...

BIT-ENVOY-2026-48521 Envoy: HTTP/3 connection pool selection null-derefs in ProdClusterManagerFactory::allocateConnPool when transport_socket_options is null

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's ProdClusterManagerFactory::allocateConnPool dereferences transportsocketoptions while selecting an HTTP/3 connection pool without first checking whether the...

PT-2026-102719

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's ProdClusterManagerFactory::allocateConnPool dereferences transport socket options while selecting an HTTP/3 connection pool without first checking whether t...

CVE-2026-100659

A flaw was found in the Netty HTTP/3 codec. This vulnerability allows access control and request routing bypasses due to missing validation of destination headers. A remote, unauthenticated attacker can exploit this flaw by sending a Hypertext Transfer Protocol HTTP request containing conflicting...

CVE-2026-100664

A flaw was found in Netty's HTTP/3 codec. When converting HTTP/1 requests to HTTP/3, the codec improperly prioritizes the Host header over the request-target authority. A remote, unauthenticated attacker can exploit this authority confusion by sending a request containing conflicting destination...

CVE-2026-100663

A flaw was found in Netty's HTTP/3 codec netty-codec-http3. A remote attacker can bypass security policies and tunnel allowlists when Netty acts as an HTTP/1 to HTTP/3 proxy or gateway. Due to improper translation of HTTP/1 CONNECT requests, the component uses the attacker-controlled Host header ...

CVE-2026-100662

A flaw was found in Netty's HTTP/3 codec. A remote, unauthenticated attacker can cause a Denial of Service DoS by establishing an HTTP/3 connection and sending stream instructions that declare excessively large field lengths without delivering the complete data. Because the server does not enforc...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the Insert With Literal Name handling in QpackEncoderHandler.java, which accepts a declared string-literal length of up to roughly 2 GiB for both the name line 141 and the value li...