CVE-2025-12642: Inconsistent Interpretation of HTTP Requests

lighttpd1.4.80 incorrectly merged trailer fields into headers after http request parsing. This behavior can be exploited to conduct HTTP Header Smuggling attacks. Successful exploitation may allow an attacker to: Bypass access control rules Inject unsafe input into backend logic that trusts reque...

PT-2025-44791

Name of the Vulnerable Software and Affected Versions lighttpd version 1.4.80 Description The software improperly merges trailer fields into headers following HTTP request parsing, which can be leveraged to carry out HTTP Header Smuggling attacks. Successful exploitation could allow an attacker t...

Security update for python-h2

This update for python-h2 fixes the following issues: CVE-2025-57804: Fixed HTTP Request Smuggling due to illegal characters in headers bsc1248737 Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST onlineupdate or "zypper patch". Alternatively...

CVE-2025-23167

A flaw in Node.js 20's HTTP parser allows improper termination of HTTP/1 headers using \r\n\rX instead of the required \r\n\r\n. This inconsistency enables request smuggling, allowing attackers to bypass proxy-based access controls and submit unauthorized requests. The issue was resolved by...

SUSE-SU-2025:20230-1 Security update for haproxy

This update for haproxy fixes the following issues: Update to version 2.8.11+git0.01c1056a4: VUL-0: CVE-2024-53008: haproxy: HTTP/3 request smuggling via malformed HTTP headers forwarded to a HTTP/1.1 non-compliant back-end server bsc1233973 BUG/MINOR: cfgparse-listen: fix option httpslog overrid...

Important: libsoup

Issue Overview: GNOME libsoup before 3.6.0 allows HTTP request smuggling in some configurations because '\0' characters at the end of header names are ignored, i.e., a "Transfer-Encoding\0: chunked" header is treated the same as a "Transfer-Encoding: chunked" header. CVE-2024-52530 GNOME libsoup...

OESA-2024-2068 netty3 security update

Netty is a NIO client server framework which enables quick and easy development of network applications such as protocol servers and clients. It greatly simplifies and streamlines network programming such as TCP and UDP socket server. Security Fixes: Netty before 4.1.42.Final mishandles whitespac...

UBUNTU-CVE-2024-27982

The team has identified a critical vulnerability in the http server of the most recent version of Node, where malformed headers can lead to HTTP request smuggling. Specifically, if a space is placed before a content-length header, it is not interpreted correctly, enabling attackers to smuggle in ...

SUSE CVE-2023-37276

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. aiohttp v3.8.4 and earlier are bundled with llhttp v6.0.6. Vulnerable code is used by aiohttp for its HTTP request parser when available which is the default case when installing from a wheel. This vulnerability only...

SUSE CVE-2022-35256

The llhttp parser in the http module in Node v18.7.0 does not correctly handle header fields that are not terminated with CLRF. This may result in HTTP Request Smuggling...

GSD-2022-1002524 input validation (CWE-20) in Elastic Load Balancer (ELB) version ELB prior to 2022-01-29 when "Legacy cache settings" is enabled

In Amazon Elastic Load Balancer ELB prior to 2022-01-29 when "Legacy cache settings" is enabled an input validation CWE-20 vulnerability exists in the HTTP Header processing that can be attacked via the network using a trailing space in the requests resulting in HTTP Header Smuggling...

OESA-2021-1058 nodejs security update

Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices...

nodejs: HTTP request smuggling due to CR-to-Hyphen conversion

A flaw was found in Node.js, where affected Node.js versions converted carriage returns in HTTP request headers to a hyphen before parsing. This flaw leads to HTTP Request Smuggling as it is a non-standard interpretation of the header. The highest threat from this vulnerability is to...