HTTP Request Smuggling

Overview undici is an An HTTP/1.1 client, written from scratch for Node.js Affected versions of this package are vulnerable to HTTP Request Smuggling in the processHeader while handling HTTP/1.1 requests containing duplicate Content-Length headers with differing casing. An attacker can bypass...

CVE-2026-1525

Undici allows duplicate HTTP Content-Length headers when they are provided in an array with case-variant names e.g., Content-Length and content-length. This produces malformed HTTP/1.1 requests with multiple conflicting Content-Length values on the wire. Who is impacted: Applications...

HTTP Request Smuggling

Overview org.webjars.npm:undici is an An HTTP/1.1 client, written from scratch for Node.js Affected versions of this package are vulnerable to HTTP Request Smuggling in the processHeader while handling HTTP/1.1 requests containing duplicate Content-Length headers with differing casing. An attacke...

PT-2026-25064

Name of the Vulnerable Software and Affected Versions Undici versions prior to 7.24.0 and prior to 6.24.0 Description Undici is susceptible to inconsistent interpretation of HTTP requests, specifically HTTP Request/Response Smuggling. The issue arises when duplicate HTTP Content-Length headers ar...

Security update for libsoup2

This update for libsoup2 fixes the following issues: CVE-2025-32049: denial of service attack to websocket server bsc1240751. CVE-2026-1467: lack of input sanitization can lead to unintended or unauthorized HTTP requests bsc1257398. CVE-2026-1539: proxy authentication credentials leaked via the...

haproxy: request smuggling attack or response splitting via duplicate content-length header

Proxy server haproxy has a flaw that can could allow an HTTP request smuggling attack with the goal of bypassing access-control list rules defined by haproxy. The attack was made possible by utilizing an integer overflow vulnerability that allowed reaching an unexpected state in haproxy while...

haproxy: request smuggling attack or response splitting via duplicate content-length header

Proxy server haproxy has a flaw that can could allow an HTTP request smuggling attack with the goal of bypassing access-control list rules defined by haproxy. The attack was made possible by utilizing an integer overflow vulnerability that allowed reaching an unexpected state in haproxy while...

UBUNTU-CVE-2020-7659

reel through 0.6.1 allows Request Smuggling attacks due to incorrect Content-Length and Transfer encoding header parsing. It is possible to conduct HTTP request smuggling attacks by sending the Content-Length header twice. Furthermore, invalid Transfer Encoding headers were found to be parsed as...

HTTP Request Smuggling

Overview meinheld is a High performance asynchronous Python WSGI Web Server Affected versions of this package are vulnerable to HTTP Request Smuggling. HTTP pipelining issues and request smuggling attacks might be possible due to incorrect Content-Length and Transfer encoding header parsing. It i...