CVE-2026-6276

A flaw was found in libcurl. This vulnerability allows for information disclosure when a custom Host: header is used in an initial HTTP request, and a subsequent request reuses the same connection without specifying a new Host: header. This can lead to libcurl incorrectly sending cookies intended...

Improper Access Control

Caddy is vulnerable to Improper Access Control. The vulnerability is due to incorrect case-insensitive matching in the HTTP host request matcher when large host lists are configured, allowing attackers to modify the casing of the Host header and bypass host-based routing or associated access...

CVE-2026-6276

Using libcurl, when a custom Host: header is first set for an HTTP request and a second request is subsequently done using the same easy handle but without the custom Host: header set, the second request would use stale information and pass on cookies meant for the first host in the second reques...

UBUNTU-CVE-2026-6276

Using libcurl, when a custom Host: header is first set for an HTTP request and a second request is subsequently done using the same easy handle but without the custom Host: header set, the second request would use stale information and pass on cookies meant for the first host in the second reques...

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...

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...

CURL-CVE-2026-6276 stale custom cookie host causes cookie leak

Using libcurl, when a custom Host: header is first set for an HTTP request and a second request is subsequently done using the same easy handle but without the custom Host: header set, the second request would use stale information and pass on cookies meant for the first host in the second reques...

stale custom cookie host causes cookie leak

Using libcurl, when a custom Host: header is first set for an HTTP request and a second request is subsequently done using the same easy handle but without the custom Host: header set, the second request would use stale information and pass on cookies meant for the first host in the second reques...

PT-2026-35895

Name of the Vulnerable Software and Affected Versions curl affected versions not specified Description When using libcurl, a flaw exists where a custom Host: header set for an initial HTTP request can cause subsequent requests using the same easy handle to use stale information. If the second...

Origin Validation Error

Overview Affected versions of this package are vulnerable to Origin Validation Error via the reuse of an easy handle in HTTP requests when a custom Host: header is set for the initial request and omitted in a subsequent one. An attacker can obtain cookies intended for a different host by exploiti...

DNS Rebinding

Overview copilot-api is a Turn GitHub Copilot into OpenAI/Anthropic API compatible server. Usable with Claude Code! Affected versions of this package are vulnerable to DNS Rebinding in ericc-ch copilot-api up to 0.7.0. This impacts an unknown function of the file /token of the component Header...

Security Bulletin: Vulnerability in libsoup affects IBM Netezza Appliance

Summary The libsoup package is used by IBM Netezza Appliance . IBM Netezza Appliance has addressed the applicable CVECVE-2025-14523 Vulnerability Details CVEID:CVE-2025-14523 DESCRIPTION: A flaw in libsoup’s HTTP header handling allows multiple Host: headers in a request and returns the last...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: tomcat (UTSA-2026-014281)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-014281 advisory. Improper Input Validation vulnerability. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.14, from 10.1.0-M1 through 10.1.49, from 9.0.0-M1 through...

CVE-2026-6874 ericc-ch copilot-api Header token dns rebinding

A vulnerability was determined in ericc-ch copilot-api up to 0.7.0. This impacts an unknown function of the file /token of the component Header Handler. Executing a manipulation of the argument Host can lead to reliance on reverse dns resolution. The attack may be performed from remote. The explo...

CVE-2026-6874 ericc-ch copilot-api Header token dns rebinding

A vulnerability was determined in ericc-ch copilot-api up to 0.7.0. This impacts an unknown function of the file /token of the component Header Handler. Executing a manipulation of the argument Host can lead to reliance on reverse dns resolution. The attack may be performed from remote. The explo...

CVE-2026-6874

CVE-2026-6874 affects ericc-ch copilot-api up to version 0.7.0, specifically a vulnerability in the Header Handler's /token path where manipulating the Host argument can cause reliance on reverse DNS resolution. The attack is described as remote-accessible, with exploitation publicly disclosed. V...

Exploit for Origin Validation Error in Apache Airflow_Providers_Amazon

CVE-2026-25604 PoC Host Header Injection leading to SAML au...

CVE-2026-41130 Craft CMS has a host header injection leading to SSRF via resource-js endpoint

Craft CMS is a content management system CMS. In versions on the 4.x branch through 4.17.8 and the 5.x branch through 5.9.14, the resource-js endpoint in Craft CMS allows unauthenticated requests to proxy remote JavaScript resources. When trustedHosts is not explicitly restricted default...

CVE-2026-41130 Craft CMS has a host header injection leading to SSRF via resource-js endpoint

Craft CMS is a content management system CMS. In versions on the 4.x branch through 4.17.8 and the 5.x branch through 5.9.14, the resource-js endpoint in Craft CMS allows unauthenticated requests to proxy remote JavaScript resources. When trustedHosts is not explicitly restricted default...

CVE-2026-41130

Craft CMS is a content management system CMS. In versions on the 4.x branch through 4.17.8 and the 5.x branch through 5.9.14, the resource-js endpoint in Craft CMS allows unauthenticated requests to proxy remote JavaScript resources. When trustedHosts is not explicitly restricted default...