PT-2026-95420

Name of the Vulnerable Software and Affected Versions Netty affected versions not specified Description A flaw exists in the HTTP/2 codec when converting HTTP/1 CONNECT requests to HTTP/2. The component incorrectly utilizes the Host header instead of the CONNECT authority-form request-target to...

PT-2026-95579

Name of the Vulnerable Software and Affected Versions SysReptor versions prior to 2026.58 Description Installations that enable password reset by email and configure ALLOWED HOSTS with a wildcard accept an attacker-controlled Host header during the generation of password reset links. An...

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 ...

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 ...

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-2026-61589

djust , a Phoenix LiveView-style reactive server-side rendering library for Django, had a tenant resolution flaw in versions prior to 1.0.7 . The WebSocket handle_mount and ViewRuntime._build_request rebuilt the HttpRequest via RequestFactory().get(...) without an HTTP_HOST header, causing reques...

Updated python-h2 packages fix a security vulnerability

Duplicate Host header facilitate request smuggling. CVE-2026-71554...

MGASA-2026-0409 Updated python-h2 packages fix a security vulnerability

Duplicate Host header facilitate request smuggling. CVE-2026-71554...

@zereight/mcp-gitlab: DNS rebinding reaches local Streamable HTTP MCP transport

@zereight/mcp-gitlab exposes its Streamable HTTP MCP endpoint without an effective Host or Origin allowlist. A malicious web page can use DNS rebinding to route browser requests to a victim's local MCP listener while preserving an attacker-controlled Host and Origin. The server accepts those...

Security Bulletin: IBM Watson Discovery for IBM Cloud Pak for Data affected by vulnerability in http-proxy-middleware

Summary IBM Watson Discovery for IBM Cloud Pak for Data affected by vulnerability in http-proxy-middleware Vulnerability Details CVEID:CVE-2026-55602 DESCRIPTION: http-proxy-middleware is node.js http-proxy middleware. From 0.16.0 until 2.0.10, 3.0.6, and 4.1.0, http-proxy-middleware documents...

GHSA-RF68-8GJR-36Q7 Nezha: OAuth2 redirect_uri Host header injection regression when dashboard_host is empty

Summary Nezha v2.2.3 regresses the GHSA-9rc6-8cjv-rcvx host header injection fix for deployments where the new dashboardhost setting is empty. In that configuration, /api/v1/oauth2/provider again reflects the request Host header into the OAuth2 redirecturi sent to the identity provider, even if...

Nezha: OAuth2 redirect_uri Host header injection regression when dashboard_host is empty

Summary Nezha v2.2.3 regresses the GHSA-9rc6-8cjv-rcvx host header injection fix for deployments where the new dashboardhost setting is empty. In that configuration, /api/v1/oauth2/provider again reflects the request Host header into the OAuth2 redirecturi sent to the identity provider, even if...

CVE-2026-91966 AVideo through 29.0 Unauthenticated SSRF via Host Header

AVideo through 29.0 contains an unauthenticated server-side request forgery vulnerability in the checksiteavailability function that accepts attacker-controlled HTTP Host headers. Attackers can send requests to submitIndex.php or ajax.php with arbitrary Host headers to probe internal network host...

EUVD-2026-78642

AVideo through 29.0 contains an unauthenticated server-side request forgery vulnerability in the checksiteavailability function that accepts attacker-controlled HTTP Host headers. Attackers can send requests to submitIndex.php or ajax.php with arbitrary Host headers to probe internal network host...

CVE-2026-91966 AVideo through 29.0 Unauthenticated SSRF via Host Header

AVideo through 29.0 contains an unauthenticated server-side request forgery vulnerability in the checksiteavailability function that accepts attacker-controlled HTTP Host headers. Attackers can send requests to submitIndex.php or ajax.php with arbitrary Host headers to probe internal network host...

CVE-2026-91966

AVideo through 29.0 contains an unauthenticated server-side request forgery (SSRF) vulnerability in the check_site_availability function. The function accepts attacker-controlled HTTP Host headers , allowing an unauthenticated attacker to send crafted requests to submitIndex.php or ajax.php with ...

CVE-2026-91966 AVideo through 29.0 Unauthenticated SSRF via Host Header

AVideo through 29.0 contains an unauthenticated server-side request forgery vulnerability in the checksiteavailability function that accepts attacker-controlled HTTP Host headers. Attackers can send requests to submitIndex.php or ajax.php with arbitrary Host headers to probe internal network host...

CVE-2026-54167 Pipelines-as-Code GitHub App token request can be redirected via untrusted Enterprise Host header

Pipelines-as-Code is a CI/CD system that lets users define Tekton pipelines in source code repositories. Prior to 0.37.8, 0.39.6, 0.42.1, and 0.48.0, the GitHub App provider accepts X-GitHub-Enterprise-Host as the API host while processing webhook events containing an installation.id, before...