EUVD-2026-69235

httpd function checkheader/3 rejects duplicate Content-Length per CVE-2026-23941 but never checks for the TE+CL co-presence that RFC 9112 §6.3 identifies as a probable smuggling attempt. handlebody/3 frames by chunked and silently discards Content-Length. A CL-preferring front-end paired with...

CVE-2026-73812 inets, httpd: HTTP Request Smuggling via Transfer-Encoding and Content-Length

httpd function checkheader/3 rejects duplicate Content-Length per CVE-2026-23941 but never checks for the TE+CL co-presence that RFC 9112 §6.3 identifies as a probable smuggling attempt. handlebody/3 frames by chunked and silently discards Content-Length. A CL-preferring front-end paired with...

CVE-2026-73812 inets, httpd: HTTP Request Smuggling via Transfer-Encoding and Content-Length

httpd function checkheader/3 rejects duplicate Content-Length per CVE-2026-23941 but never checks for the TE+CL co-presence that RFC 9112 §6.3 identifies as a probable smuggling attempt. handlebody/3 frames by chunked and silently discards Content-Length. A CL-preferring front-end paired with...

CVE-2026-73812 inets, httpd: HTTP Request Smuggling via Transfer-Encoding and Content-Length

httpd function checkheader/3 rejects duplicate Content-Length per CVE-2026-23941 but never checks for the TE+CL co-presence that RFC 9112 §6.3 identifies as a probable smuggling attempt. handlebody/3 frames by chunked and silently discards Content-Length. A CL-preferring front-end paired with...

EEF-CVE-2026-73812 inets, httpd: HTTP Request Smuggling via Transfer-Encoding and Content-Length

Summary httpd function checkheader/3 rejects duplicate Content-Length per CVE-2026-23941 but never checks for the TE+CL co-presence that RFC 9112 §6.3 identifies as a probable smuggling attempt. handlebody/3 frames by chunked and silently discards Content-Length. A CL-preferring front-end paired...

CVE-2026-73051

A flaw was found in actix-http. This vulnerability allows unauthenticated remote attackers to perform HTTP request smuggling. By sending specially crafted HTTP/1.1 requests that include both Content-Length and Transfer-Encoding: chunked headers, an attacker can desynchronize backend requests...

Astra Linux – Vulnerability in Netty

Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace such as a spaceTransfer-Encoding:chunked line and a later Content-Length header. This issue exists due to an incomplete fix for CVE-2019-16869...

Astra Linux – Vulnerability in Tomcat9

Apache Tomcat versions 10.0.0-M1 to 10.0.6, 9.0.0.M1 to 9.0.46, and 8.5.0 to 8.5.66 failed to properly parse the HTTP transfer-encoding request header under certain circumstances, which could lead to requests for data smuggling when used with a reverse proxy. Specifically: - Tomcat incorrectly...

Astra Linux – Vulnerability in JRuby

A vulnerability was discovered in Ruby versions 2.5.8, 2.6.x up to 2.6.6, and 2.7.x up to 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, did not rigorously check the transfer-encoding header value. An attacker could potentially exploit this vulnerability to bypass a reverse proxy which...

Astra Linux – Vulnerability in Gunicorn

Gunicorn fails to properly validate Transfer-Encoding headers, resulting in HTTP Request Smuggling HRS vulnerabilities. By creating requests with conflicting Transfer-Encoding headers, attackers can bypass security restrictions and access restricted endpoints. This issue arises due to Gunicorn’s...

Astra Linux – Vulnerability in Waitress

Waitress version 1.3.1 would parse the Transfer-Encoding header and only look for a single string value. If that value was not in the “chunked” format, it would proceed using the Content-Length header instead. According to the HTTP standard, Transfer-Encoding should be a comma-separated list, wit...

Astra Linux – Vulnerability in Waitress

In Waitress version 1.4.0, if a proxy server is used in front of Waitress, an attacker may send an invalid request that bypasses the front-end and is parsed differently by Waitress. This could lead to HTTP request smuggling. Specifically, requests containing special whitespace characters in the...

Astra Linux – Vulnerability in Gunicorn

Gunicorn version 21.2.0 does not properly validate the value of the ‘Transfer-Encoding’ header as specified in the RFC standards. This results in the use of the default fallback method ‘Content-Length’, making it vulnerable to TE.CL request smuggling. This vulnerability can lead to cache poisonin...

Astra Linux – Vulnerability in http-parser

HTTP request smuggling in Node.js versions 10, 12, and 13 causes the delivery of malicious payloads when transfer-encoding is malformed...

Astra Linux – Vulnerability in Netty

The HttpObjectDecoder.java file in Netty before version 4.1.44 allowed a Content-Length header to be accompanied by a second Content-Length header, or by a Transfer-Encoding header...

Linux Distros Unpatched Vulnerability : CVE-2026-63382

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, the libevent evhttp parser in http.c inconsistently handles duplicate...

CVE-2026-73256

Mongoose is an embedded web server and network library. Prior to 7.22, a remote unauthenticated attacker can exploit an HTTP/1.0 reverse-proxy deployment by sending a request with Transfer-Encoding: chunked and conflicting framing. The httpcb function in src/http.c tests hm.proto.len with an...

AZL-96944 CVE-2026-63382 affecting package libevent 2.1.12-1

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, the libevent evhttp parser in http.c inconsistently handles duplicate Transfer-Encoding headers, comma-separated Transfer-Encoding values, and bare line feeds in chunked framing. evhttpfindheader can select only the first...

CVE-2026-63382

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, the libevent evhttp parser in http.c inconsistently handles duplicate Transfer-Encoding headers, comma-separated Transfer-Encoding values, and bare line feeds in chunked framing. evhttpfindheader can select only the first...

AZL-97536 CVE-2026-63382 affecting package mysql 8.0.46-1

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, the libevent evhttp parser in http.c inconsistently handles duplicate Transfer-Encoding headers, comma-separated Transfer-Encoding values, and bare line feeds in chunked framing. evhttpfindheader can select only the first...