CVE-2026-31935

A flaw was found in Suricata. A remote attacker can exploit this vulnerability by sending a flood of crafted HTTP2 continuation frames. This can lead to memory exhaustion, causing the Suricata process to shut down, resulting in a Denial of Service DoS. Mitigation To mitigate this issue, consider...

CVE-2026-34441 cpp-httplib: HTTP Request Smuggling via Unconsumed GET Request Body

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.40.0, cpp-httplib is vulnerable to HTTP Request Smuggling. The server's static file handler serves GET responses without consuming the request body. On HTTP/1.1 keep-alive connections, the unread...

CVE-2026-34475

A flaw was found in Varnish Cache and Varnish Enterprise. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/1.1 requests with a path of / in the URL. This mishandling of URLs, specifically in unchecked req.url scenarios, could lead to cache poisoning, where an...

CVE-2026-33870

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, Netty incorrectly parses quoted strings in HTTP/1.1 chunked transfer encoding extension values, enabling request smuggling attacks. Versions 4.1.132.Final and 4.2.10.Final fi...

UBUNTU-CVE-2026-34475

Varnish Cache before 8.0.1 and Varnish Enterprise before 6.0.16r12, in certain unchecked req.url scenarios, mishandle URLs with a path of / for HTTP/1.1, potentially leading to cache poisoning or authentication bypass...

CVE-2026-33871

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, a remote user can trigger a Denial of Service DoS against a Netty HTTP/2 server by sending a flood of CONTINUATION frames. The server's lack of a limit on the number of...

CVE-2026-34475

Varnish Cache before 8.0.1 and Varnish Enterprise before 6.0.16r12, in certain unchecked req.url scenarios, mishandle URLs with a path of / for HTTP/1.1, potentially leading to cache poisoning or authentication bypass...

SUSE SLES12: tomcat / tomcat-admin-webapps / tomcat-docs-webapp / etc (SUSE-SU-2026:1058-1)

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1058-1 advisory. Update to Tomcat 9.0.115: - CVE-2025-48989: HTTP/2 protocol including DNS over HTTPS is vulnerable to 'MadeYouReset' DoS attack bsc1243895. -...

GHSA-W9FJ-CFPG-GRVV Netty HTTP/2 CONTINUATION Frame Flood DoS via Zero-Byte Frame Bypass

Summary A remote user can trigger a Denial of Service DoS against a Netty HTTP/2 server by sending a flood of CONTINUATION frames. The server's lack of a limit on the number of CONTINUATION frames, combined with a bypass of existing size-based mitigations using zero-byte frames, allows an user to...

EUVD-2026-15756

Mattermost versions 11.4.x = 11.4.0, 11.3.x = 11.3.1, 11.2.x = 11.2.3, 10.11.x = 10.11.11 fail to rate limit login requests which allows unauthenticated remote attackers to cause denial of service server crash and restart via HTTP/2 single packet attack with 100+ parallel login requests...

Mattermost 安全漏洞

Mattermost is an open-source collaboration platform developed by the American company Mattermost. Vulnerabilities exist in versions of Mattermost 11.4.0 and earlier 11.4.x series, as well as versions prior to 11.3.1 11.3.x series, 11.2.3 and earlier 11.2.x series, and 10.11.11 and earlier 10.11.x...

netty: netty-codec-http2: Netty MadeYouReset HTTP/2 DDoS Vulnerability

A flaw was found in Netty 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...

libsoup 安全漏洞

Libsoup is a GNOME project’s HTTP client/server library. Libsoup has a security vulnerability, which stems from a reuse of freed resources in the implementation of HTTP/2 servers. This vulnerability could allow remote attackers to exploit it by sending specially crafted HTTP/2 requests, resulting...

[SECURITY] [DSA 6160-1] netty security update

------------------------------------------------------------------------- Debian Security Advisory DSA-6160-1 [email protected] https://www.debian.org/security/ Markus Koschany March 11, 2026 https://www.debian.org/security/faq -...

CVE-2026-2835

Pingora contains an HTTP Request Smuggling (CWE-444) flaw in its parsing of HTTP/1.0 bodies and multiple Transfer-Encoding values, which can desynchronize request framing and allow a frontend proxy to bypass ACLs, poison caches, and enable cross-user attacks when Fronting certain backends. Cloudf...

Ubuntu: Security Advisory (USN-8037-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2026 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

USN-8037-1 dnsdist vulnerabilities

It was discovered that HTTP/2, which is used/vendored by DNSdist, did not properly account for resources when handling client-triggered stream resets. An attacker could possibly use this issue to cause a denial of service. CVE-2025-8671 It was discovered that DNSdist did not properly manage memor...

GHSA-8GRV-JQ2G-CFHW amphp/http-server affected by HTTP/2 DDoS vulnerability

Versions of amphp/http-server prior to 3.4.4 for the 3.x release branch and prior to 2.1.10 for the 2.x release branch are vulnerable to the HTTP/2 "MadeYouReset" DoS attack described by CVE-2025-8671 and https://kb.cert.org/vuls/id/767506. In versions 3.4.4 and 2.1.10, stream reset protection ha...

nodejs: Nodejs denial of service

A denial of service flaw has been discovered in NodeJS. A malformed HTTP/2 HEADERS frame with oversized, invalid HPACK data can cause Node.js to crash by triggering an unhandled TLSSocket error ECONNRESET. Instead of safely closing the connection, the process crashes, enabling a remote denial of...

DoS due to improper input validation vulnerability in Apache Tomcat - CVE-2024-24549

A vulnerability was found in the Tomcat package due to its handling of HTTP/2 requests. Specifically, when an HTTP/2 request surpasses the predetermined limits for headers configured within the server, the associated HTTP/2 stream isn't reset immediately. Instead, the reset action occurs only aft...