CVE-2026-48710

Starlette (Python ASGI framework) contains a Host header validation issue in versions before 1.0.1. The HTTP Host header was not validated when reconstructing request.url, while routing relies on the raw path and request.url, allowing a malformed Host header to make request.url.path differ from t...

CVE-2026-42559

RMCP is an official Rust SDK for the Model Context Protocol. Prior to version 1.4.0, the rmcp crate's Streamable HTTP server transport crates/rmcp/src/transport/streamablehttpserver/ did not validate the incoming Host header. This allowed a malicious public website, via a DNS rebinding attack, to...

RUSTSEC-2026-0189 DNS rebinding vulnerability in rmcp Streamable HTTP server transport

Prior to version 1.4.0, the rmcp crate's Streamable HTTP server transport did not validate the incoming Host header. This allowed a malicious public website, via a DNS rebinding attack, to send requests to an MCP server running on the victim's loopback or private-network interface. An attacker wh...

Security Bulletin: DevOps Test Performance contains a vulnerability related to use of the Undertow server core

Summary Due to use of Undertow, DevOps Test Performance and Rational Performance Tester contain a potential improper input validation vulnerability. CVE-2025-12543 Vulnerability Details CVEID:CVE-2025-12543 DESCRIPTION: A flaw was found in the Undertow HTTP server core, which is used in WildFly,...

EUVD-2026-21061

Apollo MCP Server is a Model Context Protocol server that exposes GraphQL operations as MCP tools. Prior to version 1.7.0, the Apollo MCP Server did not validate the Host header on incoming HTTP requests when using StreamableHTTP transport. In configurations where an HTTP-based MCP server is run ...

CVE-2026-35577 Missing Host Header Validation in Apollo MCP Server for Localhost Deployments

Apollo MCP Server is a Model Context Protocol server that exposes GraphQL operations as MCP tools. Prior to version 1.7.0, the Apollo MCP Server did not validate the Host header on incoming HTTP requests when using StreamableHTTP transport. In configurations where an HTTP-based MCP server is run ...

CVE-2026-35577

CVE-2026-35577 affects Apollo MCP Server (GraphQL/MCP) prior to v1.7.0 where Host header validation was missing for HTTP StreamableHTTP transport. This could allow a local user running the MCP server on localhost to be influenced by a malicious site via DNS rebinding, bypassing same-origin policy...

CVE-2026-35577 Missing Host Header Validation in Apollo MCP Server for Localhost Deployments

Apollo MCP Server is a Model Context Protocol server that exposes GraphQL operations as MCP tools. Prior to version 1.7.0, the Apollo MCP Server did not validate the Host header on incoming HTTP requests when using StreamableHTTP transport. In configurations where an HTTP-based MCP server is run ...

Security Bulletin: Improper Host Header Validation in Undertow HTTP Server Enables Cache Poisoning and Session Hijacking affects watsonx.data

Summary A flaw was found in the Undertow HTTP server core, which is used in WildFly, JBoss EAP, and other Java applications. The Undertow library fails to properly validate the Host header in incoming HTTP requests.As a result, requests containing malformed or malicious Host headers are processed...

PT-2026-31715

Apollo MCP Server is a Model Context Protocol server that exposes GraphQL operations as MCP tools. Prior to version 1.7.0, the Apollo MCP Server did not validate the Host header on incoming HTTP requests when using StreamableHTTP transport. In configurations where an HTTP-based MCP server is run ...

CVE-2025-66485

IBM Aspera Shares 1.9.9 through 1.11.0 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking...

Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : Undertow vulnerability (USN-8144-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-8144-1 advisory. It was discovered that Undertow incorrectly validated the Host header in incoming HTTP requests. A remote attacker...

IBM InfoSphere Information Server Cross-Site Scripting Vulnerability (CNVD-2026-16879)

IBM InfoSphere Information Server is IBM's enterprise-class data integration platform for data quality governance, data integration and master data management. A security vulnerability exists in IBM InfoSphere Information Server that stems from improper validation of HOST header input. An attacke...

CVE-2025-14807

IBM InfoSphere Information Server is affected by CVE-2025-14807 due to HTTP header injection from improper HOST header validation. Affected versions are InfoSphere Information Server 11.7.0.0 through 11.7.1.6. IBM lists remediation to upgrade to 11.7.1.0 or 11.7.1.6, including 11.7.1.6 Service Pa...

IBM InfoSphere Information Server 安全漏洞

IBM InfoSphere Information Server is IBM's enterprise-class data integration platform for data quality governance, data integration and master data management. A security vulnerability exists in IBM InfoSphere Information Server that stems from improper validation of HOST header input. An attacke...

PT-2026-28126

Name of the Vulnerable Software and Affected Versions IBM InfoSphere Information Server versions 11.7.0.0 through 11.7.1.6 Description The software is susceptible to HTTP header injection due to inadequate input validation of the HOST headers. This could enable an attacker to perform various...

Security Bulletin: IBM InfoSphere Information Server is affected by multiple vulnerabilities in Undertow

Summary Multiple vulnerabilities in Undertow that is used by InfoSphere Information Server were addressed. Vulnerability Details CVEID:CVE-2024-3884 DESCRIPTION: A flaw was found in Undertow that can cause remote denial of service attacks. When the server uses the...

CVE-2026-32632 Glances's REST/WebUI Lacks Host Validation and Remains Exposed to DNS Rebinding

Glances is an open-source system cross-platform monitoring tool. Glances recently added DNS rebinding protection for the MCP endpoint, but prior to version 4.5.2, the main REST/WebUI FastAPI application still accepts arbitrary Host headers and does not apply TrustedHostMiddleware or an equivalent...

undertow-core: Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and SSRF

A flaw was found in the Undertow HTTP server core, which is used in WildFly, JBoss EAP, and other Java applications. The Undertow library fails to properly validate the Host header in incoming HTTP requests.As a result, requests containing malformed or malicious Host headers are processed without...

OPENSUSE-SU-2026:20384-1 Security update for libsoup

This update for libsoup fixes the following issues: Update to libsoup 3.6.6: - CVE-2025-12105: heap use-after-free in message queue handling during HTTP/2 read completion bsc1252555. - CVE-2025-14523: Duplicate Host Header Handling Causes Host-Parsing Discrepancy bsc1254876. - CVE-2025-32049:...