EUVD-2026-42655

A security vulnerability has been detected in YzmCMS up to 7.5. Affected is the function geturl of the file /yzmphp/yzmphp.php of the component Header Handler. The manipulation of the argument HTTPHOST leads to cross site scripting. The attack may be initiated remotely. The exploit has been...

CVE-2026-15202 YzmCMS Header yzmphp.php get_url cross site scripting

A security vulnerability has been detected in YzmCMS up to 7.5. Affected is the function geturl of the file /yzmphp/yzmphp.php of the component Header Handler. The manipulation of the argument HTTPHOST leads to cross site scripting. The attack may be initiated remotely. The exploit has been...

PT-2026-56890

A security vulnerability has been detected in YzmCMS up to 7.5. Affected is the function get url of the file /yzmphp/yzmphp.php of the component Header Handler. The manipulation of the argument HTTP HOST leads to cross site scripting. The attack may be initiated remotely. The exploit has been...

BIT-APPSMITH-2026-55455 Appsmith: SSRF in REST API / GraphQL datasource plugins via insufficient host denylist

Appsmith is a platform to build admin panels, internal tools, and dashboards. Prior to 2.1, the outbound HTTP host filter applied by WebClientUtils used by the REST API and GraphQL datasource plugins validates hosts against an exact-match string denylist. The comprehensive address-class check...

CVE-2026-54588

A flaw was found in Poweradmin, a web-based DNS administration tool. An unauthenticated attacker can exploit this vulnerability by manipulating the HTTPHOST request header. This manipulation allows the attacker to poison the redirecturi used in the OpenID Connect OIDC, Security Assertion Markup...

CVE-2026-48491

A flaw was found in Traefik, an HTTP reverse proxy and load balancer. This vulnerability allows an unauthenticated client to bypass mutual Transport Layer Security TLS enforcement, a security measure that verifies both client and server identities. The bypass occurs due to an issue in Traefik's...

Open Redirect

Overview Affected versions of this package are vulnerable to Open Redirect via the construction of callback URLs in OIDC, SAML, and logout authentication flows using the attacker-controlled HTTPHOST header. An attacker can intercept authorization codes or session tokens by manipulating the...

CVE-2026-48491: Authentication Bypass Using an Alternate Path or Channel

Traefik is an HTTP reverse proxy and load balancer. From 3.7.0 until 3.7.3, there is a high severity vulnerability in Traefik's domain-fronting protection SNICheck that allows an unauthenticated client to bypass mutual TLS enforced through wildcard router TLSOptions. When a router uses a wildcard...

tomcat: Client certificate verification bypass due to virtual host mapping

A certificate validation flaw has been found in Apache Tomcat. omcat did not validate that the host name provided via the SNI extension was the same as the host name provided in the HTTP host header field. If Tomcat was configured with more than one virtual host and the TLS configuration for one ...

tomcat: Client certificate verification bypass due to virtual host mapping

A certificate validation flaw has been found in Apache Tomcat. omcat did not validate that the host name provided via the SNI extension was the same as the host name provided in the HTTP host header field. If Tomcat was configured with more than one virtual host and the TLS configuration for one ...

CVE-2026-50635: Weak Password Recovery Mechanism for Forgotten Password

LimeSurvey constructs account password-reset links from the client-supplied HTTP Host header without validating it. The optional allowedHosts allowlist that would constrain this is undefined in the default and documented configuration, so LSHttpRequest::checkIsAllowedHost results in no operation....

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...

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...

CVE-2026-36604: Reliance on Reverse DNS Resolution for a Security-Critical Action

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-2026-7719

A security flaw has been discovered in Totolink WA300 5.2cu.7112B20190227. The affected element is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument httphost results in buffer overflow. The attack may be launched...

CVE-2026-7719 Totolink WA300 POST Request cstecgi.cgi loginauth buffer overflow

A security flaw has been discovered in Totolink WA300 5.2cu.7112B20190227. The affected element is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument httphost results in buffer overflow. The attack may be launched...

EUVD-2026-26870

A security flaw has been discovered in Totolink WA300 5.2cu.7112B20190227. The affected element is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument httphost results in buffer overflow. The attack may be launched...

tomcat: Client certificate verification bypass due to virtual host mapping

A certificate validation flaw has been found in Apache Tomcat. omcat did not validate that the host name provided via the SNI extension was the same as the host name provided in the HTTP host header field. If Tomcat was configured with more than one virtual host and the TLS configuration for one ...

EUVD-2026-22811

Serendipity has a Host Header Injection allows SMTP header injection via unvalidated HTTPHOST in Message-ID email header...

CVE-2026-33511: Authorization Bypass Through User-Controlled Key

pyLoad is a free and open-source download manager written in Python. From version 0.4.20 to before version 0.5.0b3.dev97, the localcheck decorator in pyLoad's ClickNLoad feature can be bypassed by any remote attacker through HTTP Host header spoofing. This allows unauthenticated remote users to...