CVE-2025-0108

CVE-2025-0108 — WebSecurity（PoCと修正） このリポジトリは、CVE-2025-0108の問題（NginxとApache間のパス混乱 / ヘッダースマグリング）を再現および軽減するための小さなラボ環境を含んでいます。 この課題の目的は、二重エンコードされたリクエストがマルチレイヤースタック（Nginx - Flaskバックエンド - Apache/PHP）で認証をバイパスする方法を示し、バックエンド側の緩和策を示すことです。 この環境は教育目的のみで使用されます。 内容 CVE-2025-0108/ — 脆弱な実装（PoC） CVE-2025-0108fix/...

libevent: Libevent: HTTP header smuggling allows authorization bypass or cache poisoning

A flaw was found in Libevent, an event notification library. An unauthenticated remote attacker can exploit a vulnerability where chunked HTTP Hypertext Transfer Protocol trailers are incorrectly merged into request headers. This allows the attacker to place security-sensitive fields in trailers,...

libevent: Libevent: HTTP header smuggling allows authorization bypass or cache poisoning

A flaw was found in Libevent, an event notification library. An unauthenticated remote attacker can exploit a vulnerability where chunked HTTP Hypertext Transfer Protocol trailers are incorrectly merged into request headers. This allows the attacker to place security-sensitive fields in trailers,...

CVE-2026-49446 Cosmos: Authentication bypass via forward-auth header smuggling on Constellation tunnel in Cosmos-Server

Cosmos provides users the ability self-host a home server by acting as a secure gateway to your application, as well as a server manager. Prior to 0.22.19, tokenMiddleware in src/proxy/routerGen.go can return through the Constellation tunnel bypass before removing x-cosmos-user, x-cosmos-role,...

CVE-2026-49446 Cosmos: Authentication bypass via forward-auth header smuggling on Constellation tunnel in Cosmos-Server

Cosmos provides users the ability self-host a home server by acting as a secure gateway to your application, as well as a server manager. Prior to 0.22.19, tokenMiddleware in src/proxy/routerGen.go can return through the Constellation tunnel bypass before removing x-cosmos-user, x-cosmos-role,...

CVE-2026-49446 Cosmos: Authentication bypass via forward-auth header smuggling on Constellation tunnel in Cosmos-Server

Cosmos provides users the ability self-host a home server by acting as a secure gateway to your application, as well as a server manager. Prior to 0.22.19, tokenMiddleware in src/proxy/routerGen.go can return through the Constellation tunnel bypass before removing x-cosmos-user, x-cosmos-role,...

CVE-2026-86818: Encoding Error

fast-uri is a dependency-free RFC 3986 URI parser for Node.js, used by Fastify and ajv, that added a mailto scheme parser in version 4.1.3. In versions 4.1.3 and 4.1.4, the mailto parser compares each query field name to the reserved names to, subject, and body while the name is still...

Astra Linux – Vulnerability in Jetty9

Jetty is a Java-based web server and servlet engine. Prior to versions 9.4.52, 10.0.16, 11.0.16, and 12.0.1, Jetty accepted the + character that followed the content-length value in an HTTP/1 header field. This was more permissive than what is allowed by the RFC, and other servers routinely...

CVE-2026-88879

A flaw was found in Traefik, an HTTP reverse proxy and load balancer. Due to a discrepancy in how Traefik and certain backend applications process HTTP header names, a remote attacker can smuggle specially crafted headers. This allows the attacker to bypass identity assertions made by Traefik,...

form-data: form-data: Form field override via CRLF injection

A flaw was found in form-data, a library for creating readable multipart/form-data streams. A remote attacker can exploit this vulnerability by injecting carriage return CR, line feed LF, or double-quote " characters into the field argument of FormDataappend or the filename option. This allows th...

CVE-2026-88879

Traefik is an HTTP reverse proxy and load balancer. In Traefik v1.x, v2.x through v2.11.55, and v3.0.0 through v3.7.11, header names are canonicalized only on dashes, so X-Auth-User, XAuthUser and X.Auth.User are treated as three distinct headers by Traefik, while backends that derive variable...

CVE-2026-88879

Traefik is an HTTP reverse proxy and load balancer. In Traefik v1.x, v2.x through v2.11.55, and v3.0.0 through v3.7.11, header names are canonicalized only on dashes, so X-Auth-User, XAuthUser and X.Auth.User are treated as three distinct headers by Traefik, while backends that derive variable...

EUVD-2026-75429

Traefik is an HTTP reverse proxy and load balancer. In Traefik v1.x, v2.x through v2.11.55, and v3.0.0 through v3.7.11, header names are canonicalized only on dashes, so X-Auth-User, XAuthUser and X.Auth.User are treated as three distinct headers by Traefik, while backends that derive variable...

PT-2026-89390

Name of the Vulnerable Software and Affected Versions Traefik versions 1.x Traefik versions 2.x through 2.11.55 Traefik versions 3.0.0 through 3.7.11 Description Traefik handles request header canonicalization only on dashes, meaning it treats headers like X-Auth-User, X Auth User, and X.Auth.Use...

PT-2026-89699

Summary There is a medium severity vulnerability in Traefik's handling of request headers whose name aliases another header name. Go canonicalizes header names on dashes only, so X-Auth-User, X Auth User and X.Auth.User are three distinct headers to Traefik, while backends that derive variable...

cowlib: cowlib: Link header smuggling allows out-of-band connections to attacker-controlled origins

A flaw was found in ninenines cowlib. This vulnerability, due to improper encoding or escaping of output, allows an attacker to perform Link header directive smuggling. By manipulating the target URI, 'rel' value, or attribute keys in applications that process Link headers through cowlib, a remot...

Security Bulletin: Multiple Vulnerabilities in watsonx.data

Summary Multiple vulnerabilities were addressed in watsonx.data 2.4.0 patch 5 version, which was present in different version from watson.data 2.4.0 Vulnerability Details CVEID:CVE-2026-53537 DESCRIPTION: Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.30,...

CVE-2026-43971

A flaw was found in ninenines cowlib. This vulnerability, due to improper encoding or escaping of output, allows an attacker to perform Link header directive smuggling. By manipulating the target URI, 'rel' value, or attribute keys in applications that process Link headers through cowlib, a remot...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: libevent (UTSA-2026-106160)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-106160 advisory. Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent processes chunked HTTP trailers in http.c through evhttpreadtrailer and merges...

Improper Handling of Case Sensitivity

Overview Affected versions of this package are vulnerable to Improper Handling of Case Sensitivity in the xDS RBAC HTTP filter, which unconditionally lowercases incoming metadata keys so a header matcher configured with uppercase letters, such as X-Role, never matches. An attacker can reach traff...