CVE-2026-40562: Inconsistent Interpretation of HTTP Requests

Gazelle versions through 0.49 for Perl allows HTTP Request Smuggling via Improper Header Precedence. Gazelle incorrectly prioritizes "Content-Length" over "Transfer-Encoding: chunked" when both headers are present in an HTTP request. Per RFC 7230 3.3.3, Transfer-Encoding must take precedence. An...

RHCOS : OpenShift Container Platform 4.8.25 (RHSA-2021:5208)

The remote Red Hat Enterprise Linux CoreOS host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:5208 advisory. - haproxy: does not ensure that the scheme and path portions of a URI have the expected characters CVE-2021-39240 - haproxy: an HTTP...

ROS-20260506-73-0025

Vulnerability in tomcat10 related to a flaw in http request handling. Exploitation of the vulnerability could allow a remote attacker to send a hidden http request http request smuggling attack...

ROS-20260506-73-0026

Vulnerability in tomcat11 related to flaws in http request handling. Exploitation of the vulnerability may allow a remote attacker to send a hidden http request http request smuggling attack...

ROS-20260506-73-0024

Vulnerability in tomcat related to flaws in http request handling. Exploitation of the vulnerability could allow a remote attacker to send a hidden http request http request smuggling attack...

ROS-20260506-73-0044

Vulnerability in erlang related to flaws in http request handling. Exploitation of the vulnerability could allow a remote attacker to send a hidden http request http request smuggling attack...

CVE-2026-41417: Improper Neutralization of CRLF Sequences

Netty allows request-line validation to be bypassed when a DefaultHttpRequest or DefaultFullHttpRequest is created first and its URI is later changed via setUri. The constructors reject CRLF and whitespace characters that would break the start-line, but setUri does not apply the same validation...

RHCOS 4 : OpenShift Container Platform 4.4.3 haproxy (RHSA-2020:1936)

The remote Red Hat Enterprise Linux CoreOS 4 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:1936 advisory. - haproxy: HTTP request smuggling issue with transfer-encoding header containing an obfuscated chunked value CVE-2019-18277 - haprox...

HTTP Request Smuggling

Overview io.netty:netty-codec-http is a network application framework for rapid development of maintainable high performance protocol servers & clients. Affected versions of this package are vulnerable to HTTP Request Smuggling in the setUri function. An attacker can inject arbitrary CRLF sequenc...

GHSA-V8H7-RR48-VMMV Netty: Start-Line Injection in DefaultHttpRequest.setUri() Allows HTTP Request Smuggling and RTSP Request Injection

Summary Netty allows request-line validation to be bypassed when a DefaultHttpRequest or DefaultFullHttpRequest is created first and its URI is later changed via setUri. The constructors reject CRLF and whitespace characters that would break the start-line, but setUri does not apply the same...

Netty: Start-Line Injection in DefaultHttpRequest.setUri() Allows HTTP Request Smuggling and RTSP Request Injection

Summary Netty allows request-line validation to be bypassed when a DefaultHttpRequest or DefaultFullHttpRequest is created first and its URI is later changed via setUri. The constructors reject CRLF and whitespace characters that would break the start-line, but setUri does not apply the same...

HTTP Request/Response Smuggling Apache Tomcat Dependency in Confluence Data Center

This High severity HTTP Request/Response Smuggling vulnerability was introduced in versions 8.9.0, 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This HTTP Request/Response Smuggling vulnerability, with a CVSS Score of 7.5 and a CVSS Vector of...

PT-2026-38377

Name of the Vulnerable Software and Affected Versions Netty versions prior to 4.2.13.Final Netty versions prior to 4.1.133.Final Description Netty incorrectly parses malformed Transfer-Encoding headers, which can lead to request smuggling attacks. Specifically, the framework incorrectly marks a...

PT-2026-37246

Name of the Vulnerable Software and Affected Versions Netty versions prior to 4.1.133.Final Netty versions prior to 4.2.13.Final Description Request-line validation can be bypassed when a DefaultHttpRequest or DefaultFullHttpRequest is created and its URI is subsequently modified using the setUri...

PT-2026-38373

Name of the Vulnerable Software and Affected Versions Netty versions prior to 4.2.13.Final Netty versions prior to 4.1.133.Final Description Netty's chunk size parser silently overflows an integer, which allows for request smuggling attacks. This occurs within the getChunkSize function of the...

PT-2026-38374

Name of the Vulnerable Software and Affected Versions Netty versions prior to 4.1.133.Final Netty versions prior to 4.2.13.Final Description In the HttpObjectDecoder component, the software fails to strip the Content-Length header when an HTTP/1.0 request contains both Transfer-Encoding: chunked...

io.netty/netty-codec-http: Netty: Request smuggling via incorrect parsing of HTTP/1.1 chunked transfer encoding extension values

A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/1.1 chunked transfer encoding extension values. Due to incorrect parsing of quoted strings, this flaw enables request smuggling attacks, potentially allowing an attacker to bypass...

CVE-2026-40561

Starlet versions through 0.31 for Perl allows HTTP Request Smuggling via Improper Header Precedence. Starlet incorrectly prioritizes "Content-Length" over "Transfer-Encoding: chunked" when both headers are present in an HTTP request. Per RFC 7230 3.3.3, Transfer-Encoding must take precedence. An...

Security Bulletin: Vulnerabilities in Apache Tomcat and Lodash might affect IBM Storage Defender Copy Data Management

Summary IBM Storage Defender Copy Data Management can be affected by vulnerabilities in Apache Tomcat and Lodash. Vulnerabilities include Improper Input Validation vulnerability in Apache Tomcat, Inconsistent Interpretation of HTTP Requests 'HTTP Request/Response Smuggling' vulnerability in Apach...

Security Bulletin:Netty CRLF Injection in HttpRequestEncoder: Request Smuggling Vulnerability Fixed in 4.1.129.Final and 4.2.8.Final

Summary Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.129.Final and 4.2.8.Final, the io.netty.handler.codec.http.HttpRequestEncoder has a CRLF injection with the request URI when constructing a request. This leads to request smuggling when...