EUVD-2026-54177

h2 is a pure-Python implementation of a HTTP/2 protocol stack. Versions up to and including 4.4.0 accept request header blocks containing more than one Host header, and forward every Host header to the consuming application. Where the consumer downgrades HTTP/2 to HTTP/1.1, the resulting request...

CVE-2026-71554

CVE-2026-71554 affects the Python HTTP/2 stack in the h2 package. Versions up to and including 4.4.0 accept header blocks containing more than one Host header and forward all Host headers to the application. When a client downgrades HTTP/2 to HTTP/1.1, this can yield two Host header lines, enabli...

Security Bulletin: IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities

Summary IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a denial of service, HTTP Response and Request Smuggling vulnerabilities when servlet-3.0, servlet-3.1, servlet-4.0, servlet-5.0, servlet-6.0, or servlet-6.1 is enabled. Vulnerability Details...

CVE-2026-9190

An HTTP request smuggling vulnerability in the HTTP App Server of Progress MarkLogic Server before 11.3.6 and 12.0.3 allows a remote attacker to bypass authentication and authorization checks, hijack a legitimate user's session, or capture credentials. The vulnerability occurs when a crafted HTTP...

CVE-2026-9190

Progress MarkLogic Server versions before 11.3.6 and 12.0.3 contain an HTTP request smuggling flaw in the HTTP App Server. A crafted request with both Content-Length and Transfer-Encoding headers can cause the reverse proxy and MarkLogic Server to misinterpret request boundaries, enabling an atta...

CVE-2026-9190 HTTP request smuggling in Progress MarkLogic Server

An HTTP request smuggling vulnerability in the HTTP App Server of Progress MarkLogic Server before 11.3.6 and 12.0.3 allows a remote attacker to bypass authentication and authorization checks, hijack a legitimate user's session, or capture credentials. The vulnerability occurs when a crafted HTTP...

CVE-2026-15157

A flaw was found in undici. An application that processes a hand-rolled blob-like request body with a type property derived from untrusted input may allow a remote attacker to inject Carriage Return Line Feed CRLF sequences. This vulnerability enables the attacker to append arbitrary HTTP headers...

org.eclipse.jetty/jetty-http: HTTP request smuggling via chunked extension quoted-string parsing

A flaw was found in Eclipse Jetty. The HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used. An attacker can inject crafted requests to manipulate and trick the parser. This issue can lead to security controls bypass, cache poisoning or unauthorized endpoint access...

org.eclipse.jetty/jetty-http: HTTP request smuggling via chunked extension quoted-string parsing

A flaw was found in Eclipse Jetty. The HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used. An attacker can inject crafted requests to manipulate and trick the parser. This issue can lead to security controls bypass, cache poisoning or unauthorized endpoint access...

org.eclipse.jetty/jetty-http: HTTP request smuggling via chunked extension quoted-string parsing

A flaw was found in Eclipse Jetty. The HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used. An attacker can inject crafted requests to manipulate and trick the parser. This issue can lead to security controls bypass, cache poisoning or unauthorized endpoint access...

Important: Red Hat Security Advisory: Satellite 6.19.3 Async Update

A new release is now available for Red Hat Satellite 6.19 for RHEL 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

org.eclipse.jetty/jetty-http: HTTP request smuggling via chunked extension quoted-string parsing

A flaw was found in Eclipse Jetty. The HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used. An attacker can inject crafted requests to manipulate and trick the parser. This issue can lead to security controls bypass, cache poisoning or unauthorized endpoint access...

AIOHTTP: HTTP request smuggling via WebSocket upgrade

SummaryThe HTTP parsers were vulnerable to a request smuggling attack relating to WebSocket upgrades. ImpactIf using the server-side component, it may be possible for an attacker to execute a request smuggling vulnerability using an edge case in the WebSocket upgrade procedure. AIOHTT is unaware ...

PYSEC-2026-3546 AIOHTTP: HTTP request smuggling via WebSocket upgrade

Summary The HTTP parsers were vulnerable to a request smuggling attack relating to WebSocket upgrades. Impact If using the server-side component, it may be possible for an attacker to execute a request smuggling vulnerability using an edge case in the WebSocket upgrade procedure. AIOHTT is unawar...

HTTP Request Smuggling

Overview Affected versions of this package are vulnerable to HTTP Request Smuggling in the HTTP client when forwarding proxies rebuild outbound headers from the visible IncomingMessage headers while piping the original body to a reused backend connection. An attacker can manipulate HTTP request...

Linux Distros Unpatched Vulnerability : CVE-2026-69243

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the HTTP parsers were vulnerable to a request smuggling attack...

DEBIAN-CVE-2026-69243

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the HTTP parsers were vulnerable to a request smuggling attack relating to WebSocket upgrades. If using the server-side component, an attacker may be able to execute a request smuggling vulnerability...

CVE-2026-69243

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the HTTP parsers were vulnerable to a request smuggling attack relating to WebSocket upgrades. If using the server-side component, an attacker may be able to execute a request smuggling vulnerability...

UBUNTU-CVE-2026-69243

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the HTTP parsers were vulnerable to a request smuggling attack relating to WebSocket upgrades. If using the server-side component, an attacker may be able to execute a request smuggling vulnerability...

GHSA-MFX4-HV73-Q22V AIOHTTP: HTTP request smuggling via WebSocket upgrade

Summary The HTTP parsers were vulnerable to a request smuggling attack relating to WebSocket upgrades. Impact If using the server-side component, it may be possible for an attacker to execute a request smuggling vulnerability using an edge case in the WebSocket upgrade procedure. AIOHTT is unawar...