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...

CVE-2023-44487

CVE-2023-44487 Basic vulnerability scanning to see if web servers may be vulnerable to CVE-2023-44487 This tool checks to see if a website is vulnerable to CVE-2023-44487 completely non-invasively. 1. The tool checks if a web server accepts HTTP/2 requests without downgrading them 2. If the web...

CVE-2023-44487-HTTP2-DoS-Rapid-Reset-Exploit

CVE-2023-44487 HTTP/2 DoS Rapid Reset Exploit Professional Edition v1.0.1 | Author: Sudeepa Wanigarathna -orange.svg Table of Contents Overview Vulnerability Details Features Requirements Installation Quick Start Usage Guide Configuration Options Docker Support Examples Understanding Results...

CVE-2026-11118-HTTP-2-Rapid-Reset-DDoS

CVE-2026-11118 – HTTP/2 Rapid Reset DDoS Program Code Python/http2 client + server http2serversim.py - Simple HTTP/2 server that processes reset streams import socket, ssl, h2.connection, h2.events def handle: sock = socket.socket sock.setsockoptsocket.SOLSOCKET, socket.SOREUSEADDR, 1...

CLEANSTART-2025-MG51423 HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023

CVE-2023-44487 affects multiple packages. The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023. See references for individual vulnerability details...

CLEANSTART-2024-ND97566 HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023

Security vulnerability affects the nghttp2 package. The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023...

Astra Linux – Vulnerability in Tomcat9

A vulnerability exists in Apache Tomcat related to uncontrolled resource consumption, caused by an allocation leak in the HTTP/2 backlog tracking when a stream is reset. This issue affects Apache Tomcat: versions from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, and from 9.0.39...

UBUNTU-CVE-2026-89477

In the Linux kernel, the following vulnerability has been resolved: sctp: fix NULL deref on untransmitted RECONF completion sctpprocessstrresetoutreq, sctpprocessstrresetaddstrmout and sctpprocessstrresetresp complete a pending stream reconfiguration request by stopping the reconf timer on the...

netty: io.netty/netty-codec-http: Netty: Denial of Service via memory exhaustion in SPDY-to-HTTP codec

A flaw was found in Netty. A remote attacker can exploit a vulnerability in the SpdyHttpDecoder handler of Netty's SPDY-to-HTTP codec. When processing a client-initiated SYNSTREAM frame, the decoder fails to release allocated memory if the stream is reset or content limits are exceeded. This...

kernel: sctp: validate stream count in sctp_process_strreset_inreq()

A flaw was found in the Linux kernel's Stream Control Transmission Protocol SCTP implementation. When processing a Stream Reset Incoming Request RESETINREQUEST from a peer, the kernel does not properly validate the stream count. This can lead to an integer overflow when calculating the size for t...

kernel: sctp: validate stream count in sctp_process_strreset_inreq()

A flaw was found in the Linux kernel's Stream Control Transmission Protocol SCTP implementation. When processing a Stream Reset Incoming Request RESETINREQUEST from a peer, the kernel does not properly validate the stream count. This can lead to an integer overflow when calculating the size for t...

tomcat: Apache Tomcat: Denial of Service via HTTP/2 allocation leak

A flaw was found in Apache Tomcat. This vulnerability, an uncontrolled resource consumption issue, arises from an allocation leak in the HTTP/2 backlog tracking when a stream is reset. A remote attacker could exploit this to cause a Denial of Service DoS, making the server unresponsive or...

CVE-2026-68763

A flaw was found in Apache Tomcat. This vulnerability, an uncontrolled resource consumption issue, arises from an allocation leak in the HTTP/2 backlog tracking when a stream is reset. A remote attacker could exploit this to cause a Denial of Service DoS, making the server unresponsive or...

SUSE CVE-2026-68763

Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120. The following versions were...

Allocation of Resources Without Limits or Throttling

Overview org.apache.tomcat:tomcat-coyote is a Tomcat Connectors and HTTP parser. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the HTTP/2 backlog tracking when a stream is reset. An attacker can exhaust system resources by repeatedly...

EUVD-2026-66190

Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120. The following versions were...

Linux Distros Unpatched Vulnerability : CVE-2026-68763

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset This issue affects...

DEBIAN-CVE-2026-68763

Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120. The following versions were...

CVE-2026-68763

Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120. The following versions were...

CVE-2026-68763 Apache Tomcat: DoS via allocation leak in HTTP/2 backlog tracking when a stream is reset

Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120. The following versions were...