CVE-2026-11624

The Model Context Protocol has a security warning advising servers to validate the "Origin" header on all incoming connections to prevent DNS rebinding attacks. Prior to the v0.25.0 release, users had no way to validate the origin's host. In v0.25.0, a new "--allowed-hosts" flag was introduced...

CVE-2026-11624

The Model Context Protocol has a security warning advising servers to validate the "Origin" header on all incoming connections to prevent DNS rebinding attacks. Prior to the v0.25.0 release, users had no way to validate the origin's host. In v0.25.0, a new "--allowed-hosts" flag was introduced...

CVE-2026-11624

The CVE-2026-11624 entry concerns the Model Context Protocol server where origin validation of the Origin header affects DNS rebinding risk. Before v0.25.0 there was no host validation; v0.25.0 introduces --allowed-hosts and --allowed-origins flags to specify permitted hosts at startup. Both flag...

EUVD-2026-36650

The Model Context Protocol has a security warning advising servers to validate the "Origin" header on all incoming connections to prevent DNS rebinding attacks. Prior to the v0.25.0 release, users had no way to validate the origin's host. In v0.25.0, a new "--allowed-hosts" flag was introduced...

CVE-2026-11624

The Model Context Protocol has a security warning advising servers to validate the "Origin" header on all incoming connections to prevent DNS rebinding attacks. Prior to the v0.25.0 release, users had no way to validate the origin's host. In v0.25.0, a new "--allowed-hosts" flag was introduced...

PT-2026-49089

Name of the Vulnerable Software and Affected Versions Model Context Protocol versions prior to 0.25.0 Description Servers fail to validate the "Origin" header on incoming connections, which may allow DNS rebinding attacks. DNS rebinding is a method of bypassing the Same-Origin Policy to interact...

CVE-2026-9739

Vulnerable to DNS rebinding attacks when using SSE http://b/499408790. During the beta phase, we implemented allowed-origins and allowed-hosts flags to align with MCP security guidelines. However, the hardcoded Access-Control-Allow-Origin: header in the SSE initialization handler was inadvertentl...

CVE-2026-9739

Vulnerable to DNS rebinding attacks when using SSE http://b/499408790. During the beta phase, we implemented allowed-origins and allowed-hosts flags to align with MCP security guidelines. However, the hardcoded Access-Control-Allow-Origin: header in the SSE initialization handler was inadvertentl...

PT-2026-44123

Name of the Vulnerable Software and Affected Versions Toolbox affected versions not specified Description The software is susceptible to DNS rebinding attacks when using Server-Sent Events SSE under specification v2024-11-05. This occurs because the SSE initialization handler retains a hardcoded...

RUSTSEC-2026-0140 DNS rebinding and cross-origin CSRF in dynoxide's MCP HTTP transport

dynoxide's MCP HTTP transport was vulnerable to DNS rebinding via its transitive rmcp dependency, plus a related cross-origin CSRF gap. A malicious web page could make the user's browser send requests to a local dynoxide mcp --http or dynoxide serve --mcp server with a non-loopback Host header,...

CLSA-2026-1777884162 Fix CVE(s): CVE-2018-8014

Fix build process: - debian/keystores/ca-cert.pem, ca.jks: regenerate self-signed test CA using the existing ca-key.pem previous CA valid only until 21.03.2025. New validity: 21.04.2026 to 18.04.2036. - debian/keystores/localhost-cert.pem, localhost.jks, localhost-copy1.jks: re-issue against the...

CVE-2026-27977

A CSRF check bypass flaw has been discovered in Next.js. In the next dev, cross-site protection for internal websocket endpoints could treat Origin: null as a bypass case even if allowedDevOrigins is configured, allowing privacy-sensitive/opaque contexts for example sandboxed documents to connect...

CVE-2026-27978

Next.js (React framework) vulnerability CVE-2026-27978: in versions 16.0.1 up to 16.1.7, origin: null was treated as missing during Server Action CSRF validation, allowing requests from opaque contexts (e.g., sandboxed iframes) to bypass origin verification and potentially trigger state-changing ...

GHSA-MQ59-M269-XVCX Next.js: null origin can bypass Server Actions CSRF checks

Summary origin: null was treated as a "missing" origin during Server Action CSRF validation. As a result, requests from opaque contexts such as sandboxed iframes could bypass origin verification instead of being validated as cross-origin requests. Impact An attacker could induce a victim browser ...

PT-2026-25909

Name of the Vulnerable Software and Affected Versions Next.js versions 16.0.1 through 16.1.7 Description Next.js, a React framework for building full-stack web applications, had a flaw in its Server Action CSRF validation. Specifically, origin: null was incorrectly treated as a missing origin,...

CVE-2026-30964

web-auth/webauthn-lib is an open source set of PHP libraries and a Symfony bundle to allow developers to integrate that authentication mechanism into their web applications. Prior to 5.2.4, when allowedorigins is configured, CheckAllowedOrigins reduces URL-like values to their host component and...

CVE-2026-30964 Webauthn Framework: allowed_origins collapses URL-like origins to host-only values, bypassing exact origin validation

web-auth/webauthn-lib is an open source set of PHP libraries and a Symfony bundle to allow developers to integrate that authentication mechanism into their web applications. Prior to 5.2.4, when allowedorigins is configured, CheckAllowedOrigins reduces URL-like values to their host component and...

CVE-2026-30964 Webauthn Framework: allowed_origins collapses URL-like origins to host-only values, bypassing exact origin validation

web-auth/webauthn-lib is an open source set of PHP libraries and a Symfony bundle to allow developers to integrate that authentication mechanism into their web applications. Prior to 5.2.4, when allowedorigins is configured, CheckAllowedOrigins reduces URL-like values to their host component and...

CVE-2026-30964

web-auth/webauthn-lib is an open source set of PHP libraries and a Symfony bundle to allow developers to integrate that authentication mechanism into their web applications. Prior to 5.2.4, when allowedorigins is configured, CheckAllowedOrigins reduces URL-like values to their host component and...

CVE-2026-30964 Webauthn Framework: allowed_origins collapses URL-like origins to host-only values, bypassing exact origin validation

web-auth/webauthn-lib is an open source set of PHP libraries and a Symfony bundle to allow developers to integrate that authentication mechanism into their web applications. Prior to 5.2.4, when allowedorigins is configured, CheckAllowedOrigins reduces URL-like values to their host component and...