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...

Amazon Linux 2 : runc (ALASECS-2025-057)

The version of runc installed on the remote host is prior to 1.1.3-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2ECS-2025-057 advisory. Acceptance of some invalid Transfer-Encoding headers in the HTTP/1 client in net/http before Go 1.17.12 and Go 1.18.4 allow...

php: Configuring a proxy in a stream context might allow for CRLF injection in URIs

A flaw was found in PHP. In affected versions of PHP, when using streams with configured proxy and "requestfulluri" option, the URI is not properly sanitized, which can lead to HTTP request smuggling and allow the attacker to use the proxy to perform arbitrary HTTP requests originating from the...

CVE-2025-43859

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. Mitigation Ensuring any applications using h11 are behind a correctly configured reverse proxy will prevent...

Security Bulletin: Vulnerability in Puma used by Logstash affect IBM Operations Analytics - Log Analysis (CVE-2024-45614)

Summary There is a potential HTTP request smuggling in Puma that affect Logstash used by IBM Operations Analytics - Log Analysis. Vulnerability Details CVEID:CVE-2024-45614 DESCRIPTION: Puma is vulnerable to HTTP request smuggling, caused by improper parsing of the HTTP X-Forwarded-For header. By...

SUSE CVE-2025-43859

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...

CLSA-2025-1745530844 libsoup: Fix of CVE-2024-52530

CVE-2024-52530: prevent HTTP request smuggling by properly handling '0' characters at the end of header names...

CVE-2025-43859

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...

DEBIAN-CVE-2025-43859

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...

UBUNTU-CVE-2025-43859

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...

HTTP Request Smuggling

Overview h11 is an A pure-Python, bring-your-own-I/O implementation of HTTP/1.1 Affected versions of this package are vulnerable to HTTP Request Smuggling via the class ChunkedReader in readers.py file, which performs the parsing of line terminators in chunked-coding message bodies. An attacker c...

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

The CVE relates to the Python HTTP/1.1 implementation h11 (prior to 0.16.0). A leniency in parsing line terminators in chunked-coding message bodies can enable a request-smuggling vulnerability under certain conditions. The issue is mitigated by upgrading to v0.16.0 or by fixing either h11 or a b...

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...

CVE-2025-43859

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...

Improper Request Handling

http-proxy-middleware is vulnerable to Improper Request Handling. The vulnerability is due to improper request handling caused by fixRequestBody executing even when bodyParser has failed, which allows attackers to smuggle malicious HTTP requests...

PT-2025-17850

Name of the Vulnerable Software and Affected Versions h11 versions prior to 0.16.0 Description h11 is a Python implementation of HTTP/1.1. A leniency in h11's parsing of line terminators in chunked-coding message bodies can lead to request smuggling vulnerabilities under certain conditions. This...