GHSA-HVCG-QMG6-JM4C Netty: HttpObjectDecoder skips arbitrary initial control characters when only initial CRLF characters are permitted

Summary Before reading the first request-line, HttpObjectDecoder skips every byte for which Character.isISOControlb is true 0x00–0x1F and 0x7F as well as all whitespace. RFC 9112 §2.2 only asks servers to ignore empty CRLF lines preceding the request-line — a carefully scoped robustness allowance...

Netty: HttpObjectDecoder skips arbitrary initial control characters when only initial CRLF characters are permitted

Summary Before reading the first request-line, HttpObjectDecoder skips every byte for which Character.isISOControlb is true 0x00–0x1F and 0x7F as well as all whitespace. RFC 9112 §2.2 only asks servers to ignore empty CRLF lines preceding the request-line — a carefully scoped robustness allowance...

CVE-2026-50020

A flaw was found in Netty. The HttpObjectDecoder component, which processes incoming HTTP requests, incorrectly skips certain control characters and whitespace before reading the first request line. This behavior, which goes beyond standard HTTP protocol requirements, can lead to request-boundary...

CVE-2026-50020

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, before reading the first request-line, HttpObjectDecoder skips every byte for which Character.isISOControlb is true 0x00–0x1F and 0x7F as well as all...

netty: io.netty/netty-codec-http: Netty: HTTP Request Smuggling due to improper handling of conflicting HTTP/1.0 headers

A flaw was found in Netty's HttpObjectDecoder. A remote attacker can exploit this by sending a specially crafted HTTP/1.0 request that includes both Transfer-Encoding: chunked and Content-Length headers. While Netty correctly strips the conflicting Content-Length header for HTTP/1.1 messages, thi...

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 HttpObjectDecoder component. An attacker can manipulate...

EUVD-2020-0302

Malware in sbrugna...

GHSA-5WPR-CJ9P-959R HTTP Request Smuggling Leading to Client Timeouts in resteasy-netty4

A vulnerability was found in the resteasy-netty4 library arising from improper handling of HTTP requests using smuggling techniques. When an HTTP smuggling request with an ASCII control character is sent, it causes the Netty HttpObjectDecoder to transition into a BADMESSAGE state. As a result, an...

HTTP Request Smuggling Leading to Client Timeouts in resteasy-netty4

A vulnerability was found in the resteasy-netty4 library arising from improper handling of HTTP requests using smuggling techniques. When an HTTP smuggling request with an ASCII control character is sent, it causes the Netty HttpObjectDecoder to transition into a BADMESSAGE state. As a result, an...

CVE-2024-9622

A vulnerability was found in the resteasy-netty4 library arising from improper handling of HTTP requests using smuggling techniques. When an HTTP smuggling request with an ASCII control character is sent, it causes the Netty HttpObjectDecoder to transition into a BADMESSAGE state. As a result, an...

CVE-2024-9622 Resteasy-netty4-cdi: resteasy-netty4: resteasy-reactor-netty: http request smuggling leading to client timeouts in resteasy-netty4

A vulnerability was found in the resteasy-netty4 library arising from improper handling of HTTP requests using smuggling techniques. When an HTTP smuggling request with an ASCII control character is sent, it causes the Netty HttpObjectDecoder to transition into a BADMESSAGE state. As a result, an...

CVE-2024-9622

CVE-2024-9622 applies to the resteasy-netty4 library, where improper handling of HTTP requests containing ASCII control characters can trigger the Netty HttpObjectDecoder BAD_MESSAGE state. This causes subsequent legitimate requests on the same connection to be ignored, leading to client timeouts...

CVE-2024-9622 Resteasy-netty4-cdi: resteasy-netty4: resteasy-reactor-netty: http request smuggling leading to client timeouts in resteasy-netty4

A vulnerability was found in the resteasy-netty4 library arising from improper handling of HTTP requests using smuggling techniques. When an HTTP smuggling request with an ASCII control character is sent, it causes the Netty HttpObjectDecoder to transition into a BADMESSAGE state. As a result, an...

CVE-2024-9622

A vulnerability was found in the resteasy-netty4 library arising from improper handling of HTTP requests using smuggling techniques. When an HTTP smuggling request with an ASCII control character is sent, it causes the Netty HttpObjectDecoder to transition into a BADMESSAGE state. As a result, an...

The vulnerability of the HttpObjectDecoder.java component of the Netty network programming framework, related to a deficiency in HTTP request interpretation, allows attackers to access confidential data and compromise its integrity.

The vulnerability of the HttpObjectDecoder.java component of the Netty network programming framework is related to a deficiency in HTTP request interpretation. Exploiting this vulnerability can allow an attacker to gain access to confidential data and compromise its integrity...

Security Bulletin: IBM Security Guardium Insights is affected by Components with known vulnerabilities

Summary IBM Security Guardium Insights has addressed the following vulnerabilities. Vulnerability Details CVEID: CVE-2019-16869 DESCRIPTION: Netty is vulnerable to HTTP request smuggling, caused by a flaw when handling unusual whitespaces before the colon in HTTP headers. By sending a...

Security Bulletin: Netty Vulnerabilities Affect the B2B API of IBM Sterling B2B Integrator

Summary IBM Sterling B2B Integrator has addressed the security vulnerabilities. Vulnerability Details CVEID: CVE-2019-20445 DESCRIPTION: Netty could provide weaker than expected security, caused by non-proper handling of Content-Length and Transfer-Encoding in the HttpObjectDecoder.java. A remote...

CVE-2019-20444

A HTTP smuggling flaw was found in HttpObjectDecoder.java in Netty in versions prior to version 4.1.44. HTTP headers with an invalid fold, in this case CRLF carriage return, line feed without being followed by SP space or HTAB horizontal tab, result in situations where headers can be misread. Dat...

Security Bulletin: IBM MaaS360 Mobile Enterprise Gateway has security vulnerabilities (CVE-2019-2044, CVE-2019-2045)

Summary Two vulnerabilities were identified and remediated in the IBM MaaS360 Mobile Enterprise Gateway. Vulnerability Details CVEID: CVE-2019-20445 DESCRIPTION: Netty could provide weaker than expected security, caused by non-proper handling of Content-Length and Transfer-Encoding in the...

Security Bulletin: Security Vulnerabilities affect IBM Cloud Private - Netty (CVE-2019-20445, CVE-2019-20444)

Summary Security vulnerabilities affect IBM Cloud Private Vulnerability Details CVEID: CVE-2019-20445 DESCRIPTION: Netty could provide weaker than expected security, caused by non-proper handling of Content-Length and Transfer-Encoding in the HttpObjectDecoder.java. A remote attacker could exploi...