CVE-2026-7790

CVE-2026-7790 : Uncontrolled resource consumption in ninenines cowlib (cow_http_te) allows CPU and memory DoS via HTTP/1.1 chunked transfer encoding. The chunk-size field accepts an unbounded number of hex digits, causing O(N^2) CPU work and O(N) memory for N digits; drip-fed input worsens this t...

EEF-CVE-2026-7790 Unbounded chunk-size hex digits in cowlib cause quadratic CPU and memory DoS

Summary Uncontrolled Resource Consumption vulnerability in ninenines cowlib cow\http\te module allows Excessive Allocation. The chunked transfer-encoding parser in cow\http\te accepts an unbounded number of hex digits in the chunk-size field. Each digit causes a bignum multiplication Len \ 16 +...

CVE-2026-7790 Unbounded chunk-size hex digits in cowlib cause quadratic CPU and memory DoS

Uncontrolled Resource Consumption vulnerability in ninenines cowlib cowhttpte module allows Excessive Allocation. The chunked transfer-encoding parser in cowhttpte accepts an unbounded number of hex digits in the chunk-size field. Each digit causes a bignum multiplication Len 16 + digit, so parsi...

Netty vulnerable to HTTP Request Smuggling due to incorrect chunk size parsing

Summary Netty's chunk size parser silently overflows int, enabling request smuggling attacks. Details io.netty.handler.codec.http.HttpObjectDecodergetChunkSize silently overflows int. The size is accumulated as follows: result = 16; result += digit; The result is checked only for negative values...

GHSA-M4CV-J2PX-7723 Netty vulnerable to HTTP Request Smuggling due to incorrect chunk size parsing

Summary Netty's chunk size parser silently overflows int, enabling request smuggling attacks. Details io.netty.handler.codec.http.HttpObjectDecodergetChunkSize silently overflows int. The size is accumulated as follows: result = 16; result += digit; The result is checked only for negative values...

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-2026-40562

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...

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...

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-2026-40560

Starman versions before 0.4018 for Perl allows HTTP Request Smuggling via Improper Header Precedence. Starman 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...

PT-2026-35863

Name of the Vulnerable Software and Affected Versions Starman versions prior to 0.4018 Description Improper header precedence allows HTTP Request Smuggling. The software incorrectly prioritizes the Content-Length header over Transfer-Encoding: chunked when both are present in an HTTP request, whi...

CLSA-2026-1776855452 libsoup: Fix of 2 CVEs

CVE-2026-1801: use CRLF as line boundary when parsing chunked encoding data to prevent HTTP request smuggling via lone LF - CVE-2026-2443: reject Range header ends exceeding content length to prevent out-of-bounds read in byte range handling...

CLSA-2026-1776854729 libsoup: Fix of 2 CVEs

CVE-2026-1801: use CRLF as line boundary when parsing chunked encoding data to prevent HTTP request smuggling via lone LF - CVE-2026-2443: reject Range header ends exceeding content length to prevent out-of-bounds read in byte range handling...

HTTP Chunked Encoding Behavior Analyzer

This script is a security analysis tool designed to test how a web server such as Kestrel-based applications handles HTTP requests using chunked transfer encoding...

actix-http has HTTP/1.1 CL.TE Request Smuggling

A vulnerability in actix-http's HTTP/1.1 request parser allows an unauthenticated remote client to smuggle requests in deployments where a front-end HTTP intermediary and the Actix backend disagree about whether Content-Length or Transfer-Encoding: chunked defines the request body length...

📄 ASP.net 8.0.10 Core Kestrel HTTP Request Smuggling

This Metasploit auxiliary module targets a critical HTTP request smuggling vulnerability in ASP.NET Core Kestrel caused by improper parsing of malformed chunked transfer encoding notably LF-only line handling and case-variant headers like chUnKEd...

GHSA-355H-QMC2-WPWF Jetty has HTTP Request Smuggling via Chunked Extension Quoted-String Parsing

Description as reported Jetty incorrectly parses quoted strings in HTTP/1.1 chunked transfer encoding extension values, enabling request smuggling attacks. Background This vulnerability is a new variant discovered while researching the "Funky Chunks" HTTP request smuggling techniques: -...

Jetty has HTTP Request Smuggling via Chunked Extension Quoted-String Parsing

Description as reported Jetty incorrectly parses quoted strings in HTTP/1.1 chunked transfer encoding extension values, enabling request smuggling attacks. Background This vulnerability is a new variant discovered while researching the "Funky Chunks" HTTP request smuggling techniques: -...

CVE-2026-2332

In Eclipse Jetty, the HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used, similar to the "funky chunks" techniques outlined here: https://w4ke.info/2025/06/18/funky-chunks.html https://w4ke.info/2025/10/29/funky-chunks-2.html Jetty terminates chunk extension parsing...

UBUNTU-CVE-2026-2332

In Eclipse Jetty, the HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used, similar to the "funky chunks" techniques outlined here: https://w4ke.info/2025/06/18/funky-chunks.html https://w4ke.info/2025/10/29/funky-chunks-2.html Jetty terminates chunk extension parsing...