Important: Red Hat Security Advisory: Red Hat OpenStack Platform 17.1 (python-h11) security update

An update for python-h11 is now available for Red Hat OpenStack Platform 17.1 Wallaby. 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...

h11: h11 accepts some malformed Chunked-Encoding bodies

A flaw was found in the h11. This vulnerability allows request smuggling via improper parsing of chunked-coding message bodies, where h11 fails to validate the required \r\n terminators...

RHEL 9 : Red Hat OpenStack Platform 18.0 (python-h11) (RHSA-2025:7535)

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2025:7535 advisory. Security Fixes: h11 accepts some malformed Chunked-Encoding bodies CVE-2025-43859 For more details about the security issues, including the impact, a...

Important: amazon-cloudwatch-agent

Issue Overview: The net/http package accepted data in the chunked transfer encoding containing an invalid chunk-size line terminated by a bare LF. When used in conjunction with a server or proxy which incorrectly interprets a bare LF in a chunk extension as part of the extension, this could permi...

FreeBSD : h11 accepts some malformed Chunked-Encoding bodies (df126e23-24fa-11f0-ab92-f02f7497ecda)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the df126e23-24fa-11f0-ab92-f02f7497ecda advisory. h11 reports: h11 is a Python implementation of HTTP/1.1. Prior to version 0.16.0, a leniency in h11's...

Important: docker

Issue Overview: The net/http package accepted data in the chunked transfer encoding containing an invalid chunk-size line terminated by a bare LF. When used in conjunction with a server or proxy which incorrectly interprets a bare LF in a chunk extension as part of the extension, this could permi...

Important: docker

Issue Overview: The net/http package accepted data in the chunked transfer encoding containing an invalid chunk-size line terminated by a bare LF. When used in conjunction with a server or proxy which incorrectly interprets a bare LF in a chunk extension as part of the extension, this could permi...

Important: docker

Issue Overview: The net/http package accepted data in the chunked transfer encoding containing an invalid chunk-size line terminated by a bare LF. When used in conjunction with a server or proxy which incorrectly interprets a bare LF in a chunk extension as part of the extension, this could permi...

OESA-2025-1451 etcd security update

%expand: Security Fixes: A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are in the body. A malicious HTTP client can further exploit this to cause a server to automatically read a large...

CVE-2025-43859 h11 accepts some malformed Chunked-Encoding bodies

h11 is a Python implementation of HTTP/1.1. Prior to version 0.16.0, a leniency in h11's parsing of line terminators in chunked-coding message bodies can lead to request smuggling vulnerabilities under certain conditions. This issue has been patched in version 0.16.0. Since exploitation requires...

CVE-2025-43859 h11 accepts some malformed Chunked-Encoding bodies

h11 is a Python implementation of HTTP/1.1. Prior to version 0.16.0, a leniency in h11's parsing of line terminators in chunked-coding message bodies can lead to request smuggling vulnerabilities under certain conditions. This issue has been patched in version 0.16.0. Since exploitation requires...

h11 accepts some malformed Chunked-Encoding bodies

Impact A leniency in h11's parsing of line terminators in chunked-coding message bodies can lead to request smuggling vulnerabilities under certain conditions. Details HTTP/1.1 Chunked-Encoding bodies are formatted as a sequence of "chunks", each of which consists of: - chunk length - \r\n - leng...

GHSA-VQFR-H8MV-GHFJ h11 accepts some malformed Chunked-Encoding bodies

Impact A leniency in h11's parsing of line terminators in chunked-coding message bodies can lead to request smuggling vulnerabilities under certain conditions. Details HTTP/1.1 Chunked-Encoding bodies are formatted as a sequence of "chunks", each of which consists of: - chunk length - \r\n - leng...

Important: golang

Issue Overview: The net/http package accepted data in the chunked transfer encoding containing an invalid chunk-size line terminated by a bare LF. When used in conjunction with a server or proxy which incorrectly interprets a bare LF in a chunk extension as part of the extension, this could permi...

GHSA-G9PC-8G42-G6VQ RoadRunner is at risk of HTTP Request/Response Smuggling through vulnerable dependency

The net/http package dependency used by RoadRunner improperly accepts a bare LF as a line terminator in chunked data chunk-size lines. This can permit request smuggling if a net/http server is used in conjunction with a server that incorrectly accepts a bare LF as part of a chunk-ext...

CVE-2025-22871

The net/http package improperly accepts a bare LF as a line terminator in chunked data chunk-size lines. This can permit request smuggling if a net/http server is used in conjunction with a server that incorrectly accepts a bare LF as part of a chunk-ext...

AZL-59666 CVE-2025-22871 affecting package golang for versions less than 1.22.7-3

The net/http package improperly accepts a bare LF as a line terminator in chunked data chunk-size lines. This can permit request smuggling if a net/http server is used in conjunction with a server that incorrectly accepts a bare LF as part of a chunk-ext...

Linux Distros Unpatched Vulnerability : CVE-2023-39326

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are i...

OESA-2025-1223 golang security update

. Security Fixes: A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are in the body. A malicious HTTP client can further exploit this to cause a server to automatically read a large amount of...

OESA-2025-1184 etcd security update

%expand: Security Fixes: A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are in the body. A malicious HTTP client can further exploit this to cause a server to automatically read a large...