Starlette has missing Host header validation that poisons request.url.path, bypassing path-based security checks

Summary In affected versions, the HTTP Host request header was not validated before being used to reconstruct request.url. Because the routing algorithm relies on the raw HTTP path while request.url is rebuilt from the Host header, a malformed header could make request.url.path differ from the pa...

EUVD-2026-32016

Starlette has missing Host header validation that poisons request.url.path, bypassing path-based security checks...

GHSA-86QP-5C8J-P5MR Starlette has missing Host header validation that poisons request.url.path, bypassing path-based security checks

Summary In affected versions, the HTTP Host request header was not validated before being used to reconstruct request.url. Because the routing algorithm relies on the raw HTTP path while request.url is rebuilt from the Host header, a malformed header could make request.url.path differ from the pa...

Plone Docker - Host Header Injection

Plone Docker Official Image 5.2.13 5221 is vulnerable to Host Header Injection due to improper validation of input by the HOST headers. This can lead to Cross-Site Scripting XSS attacks when the malicious Host header value is reflected in the response. id: CVE-2024-23055 info: name: Plone Docker ...

ExponentCMS <= 2.6 - Host Header Injection

An HTTP Host header attack exists in ExponentCMS 2.6 and below in /exponentconstants.php. A modified HTTP header can change links on the webpage to an arbitrary value,leading to a possible attack vector for MITM. id: CVE-2021-38751 info: name: ExponentCMS = 2.6 - Host Header Injection author:...

Ruby on Rails - Open Redirect via Host Header Injection

Ruby on Rails action pack before 6.1.2.1, 6.0.3.5 contains an open redirect caused by special crafted Host headers in combination with allowed host formats, letting attackers redirect users to malicious websites, exploit requires attacker to control Host headers. id: CVE-2021-22881 info: name: Ru...

Astro SSR - Server-Side Request Forgery

Astro before 5.17.3 and @astrojs/node before 9.5.4 are vulnerable to full-read SSRF due to improper Host header validation in error page rendering, allowing attackers to redirect requests and access internal resources. id: CVE-2026-25545 info: name: Astro SSR - Server-Side Request Forgery author:...

CVE-2026-36604

Mercusys AC12G EU V1 router with firmware AC12GEUV1200909 does not validate the HTTP Host header, enabling DNS rebinding attacks. An external attacker can rebind a domain to the router's internal IP address, extending the CORS wildcard vulnerability Access-Control-Allow-Origin: to...

Security Bulletin: A vulnerability has been identified in IBM DevOps Plan that allows a Host Header Injection attack due to improper handling of the Host header in HTTP requests. (CVE-2026-4096)

Summary A vulnerability has been identified in IBM DevOps Plan that allows a Host Header Injection attack due to improper handling of the Host header in HTTP requests. Version 3.0.7 addresses the vulnerability. Vulnerability Details CVEID:CVE-2026-4096 DESCRIPTION: IBM DevOps Plan is vulnerable t...

CVE-2026-36604

Mercusys AC12G EU V1 router with firmware AC12GEUV1200909 does not validate the HTTP Host header, enabling DNS rebinding attacks. An external attacker can rebind a domain to the router's internal IP address, extending the CORS wildcard vulnerability Access-Control-Allow-Origin: to...

EUVD-2026-34143

Mercusys AC12G EU V1 router with firmware AC12GEUV1200909 does not validate the HTTP Host header, enabling DNS rebinding attacks. An external attacker can rebind a domain to the router's internal IP address, extending the CORS wildcard vulnerability Access-Control-Allow-Origin: to...

CVE-2026-36604

Mercusys AC12G (EU) V1 router vulnerable to DNS rebinding due to HTTP Host header validation failure in firmware AC12G(EU)_V1_200909. An external attacker could rebound a domain to the router’s internal IP, taking advantage of an existing CORS wildcard weakness (Access-Control-Allow-Origin: *). C...

CVE-2026-36604

Mercusys AC12G EU V1 router with firmware AC12GEUV1200909 does not validate the HTTP Host header, enabling DNS rebinding attacks. An external attacker can rebind a domain to the router's internal IP address, extending the CORS wildcard vulnerability Access-Control-Allow-Origin: to...

CVE-2026-36604

Mercusys AC12G EU V1 router with firmware AC12GEUV1200909 does not validate the HTTP Host header, enabling DNS rebinding attacks. An external attacker can rebind a domain to the router's internal IP address, extending the CORS wildcard vulnerability Access-Control-Allow-Origin: to...

PT-2026-45992

Mercusys AC12G EU V1 router with firmware AC12GEU V1 200909 does not validate the HTTP Host header, enabling DNS rebinding attacks. An external attacker can rebind a domain to the router's internal IP address, extending the CORS wildcard vulnerability Access-Control-Allow-Origin: to...

CVE-2026-44450

Lumiverse is a full-featured AI chat application. Prior to 0.9.7, the MCP server creation endpoint validates the command field against an allowlist of binary names but forwards the args array to the child process without any validation. Every binary on the allowlist accepts an inline-code executi...

CVE-2026-10269 decolua 9router HTTP Header dashboardGuard.js isAuthenticated improper authorization

A security vulnerability has been detected in decolua 9router up to 0.4.0. This issue affects the function isAuthenticated of the file src/dashboardGuard.js of the component HTTP Header Handler. The manipulation of the argument Host leads to improper authorization. The attack is possible to be...

CVE-2026-10269 decolua 9router HTTP Header dashboardGuard.js isAuthenticated improper authorization

A security vulnerability has been detected in decolua 9router up to 0.4.0. This issue affects the function isAuthenticated of the file src/dashboardGuard.js of the component HTTP Header Handler. The manipulation of the argument Host leads to improper authorization. The attack is possible to be...

The vulnerability was concealed in Starlette

There is a vulnerability in Starlette, a Python library for developing web services. Starlette is used by various products, including FastAPI. An unauthorized malicious actor can exploit this vulnerability to bypass authentication checks. This allows the malicious actor to access protected URL...

Exploit for CVE-2026-48710

BadHost — CVE-2026-48710 Scanner Detection-only scanner for t...