PYSEC-2026-418 MLflow: Improper Origin Validation in MLflow Assistant /ajax-api Endpoints Enables Browser-Mediated Local Command Execution

In MLflow version 3.9.0, the MLflow Assistant feature introduced improper origin validation in its /ajax-api endpoints. This vulnerability allows a remote attacker to exploit cross-origin requests from a malicious webpage to interact with the MLflow Assistant running on a victim's local machine. ...

CVE-2026-13208

A flaw was found in KubeVirt's virt-handler domain notify server. The gRPC handlers for HandleDomainEvent and HandleK8SEvent derive the VMI identity namespace/name solely from the request body without validating it against the connection's origin. Each virt-launcher pod connects through a per-VMI...

EUVD-2026-39087

A flaw was found in KubeVirt's virt-handler domain notify server. The gRPC handlers for HandleDomainEvent and HandleK8SEvent derive the VMI identity namespace/name solely from the request body without validating it against the connection's origin. Each virt-launcher pod connects through a per-VMI...

PT-2026-52088

Name of the Vulnerable Software and Affected Versions KubeVirt affected versions not specified Description A flaw exists in the KubeVirt virt-handler domain notify server. The gRPC handlers HandleDomainEvent and HandleK8SEvent determine the VMI identity namespace/name based only on the request...

JLSEC-2026-614 WebSocket default Origin check ignores scheme and port in HTTP.jl

Description The default WebSocket Origin validator originalloweddefault only enforced the host component of the same-origin tuple. It never checked the Origin's scheme, and when the request Host header carried no explicit port the norm for default-port 80/443 servers, where browsers omit the port...

Origin Validation Error

Overview craftcms/cms is a content management system. Affected versions of this package are vulnerable to Origin Validation Error via the actionResourceJs process. An attacker can execute arbitrary JavaScript in the context of an administrator's browser and potentially achieve remote code executi...

GHSA-VMF9-XX9W-86WX PraisonAI ToolsMCPServer legacy SSE transport accepts attacker Host/Origin and exposes registered tools

PraisonAI ToolsMCPServer legacy SSE transport accepts attacker Host/Origin and exposes registered tools Summary praisonaiagents.mcp.ToolsMCPServer.runsse builds a Starlette MCP HTTP+SSE server around mcp.server.sse.SseServerTransport. The server exposes /sse and /messages/, but it does not valida...

Origin Validation Error

Overview undici is an An HTTP/1.1 client, written from scratch for Node.js Affected versions of this package are vulnerable to Origin Validation Error in the Socks5ProxyAgent. An attacker can intercept or redirect sensitive data, including credentials and request payloads, to unintended origins b...

Origin Validation Error

Overview org.webjars.npm:undici is an An HTTP/1.1 client, written from scratch for Node.js Affected versions of this package are vulnerable to Origin Validation Error in the Socks5ProxyAgent. An attacker can intercept or redirect sensitive data, including credentials and request payloads, to...

GHSA-MX8G-39Q3-5C79 webpack-dev-server vulnerable to HMR WebSocket interception via permissive user proxies

Impact When a user-configured proxy on webpack-dev-server has a broad context e.g. / and ws: true, it also intercepts the dev server's own HMR WebSocket and forwards it to the proxy target. This leaks the browser's cookies and Origin header to the backend, bypasses the dev server's Host/Origin...

CVE-2026-53869

CVE-2026-53869 : Hermes Agent prior to 0.16.0 has a DNS rebinding vulnerability in WebSocket endpoints that allows remote attackers to bypass Host and Origin validation. The FastAPI HTTP middleware is not executed for WebSocket upgrade requests on /api/pty, /api/ws, /api/pub, and /api/events, ena...

Origin Validation Error

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Origin Validation Error through the postMessage process. An attacker can execute unauthorized actions and trigger backend API calls under the victim's authenticated session by sending crafted cross-origin...

PT-2026-50518

Name of the Vulnerable Software and Affected Versions Hermes Agent versions prior to 0.16.0 Description A DNS rebinding issue in WebSocket endpoints allows remote attackers to bypass Host and Origin validation. This occurs because FastAPI HTTP middleware does not execute for WebSocket upgrade...

PT-2026-49740

Name of the Vulnerable Software and Affected Versions Astro versions prior to 6.4.6 Description Astro SSR applications using prerendered error pages, such as '/404' or '/500' with export const prerender = true, fetch these pages over HTTP at runtime during an error. The fetch URL is derived from...

Appsmith: Configuration-dependent origin validation bypass in password reset and email verification link generation

Summary A configuration-dependent origin validation bypass was identified in Appsmith’s password reset and email verification flows on current release. Both flows derive the email-link base URL from the request Origin header. The current validation only enforces a trusted base URL when...

GHSA-J9GF-VW2F-9HRW Appsmith: Configuration-dependent origin validation bypass in password reset and email verification link generation

Summary A configuration-dependent origin validation bypass was identified in Appsmith’s password reset and email verification flows on current release. Both flows derive the email-link base URL from the request Origin header. The current validation only enforces a trusted base URL when...

EUVD-2026-36363

Idira Identity Browser Extension Chrome, Firefox, and Edge builds versions prior to 26.8.1 exhibit an origin validation flaw within its internal web-page verification routines. If an authenticated user navigates to a specially crafted webpage, this interaction could potentially allow a remote...

CVE-2026-45173

Idira Identity Browser Extension Chrome, Firefox, and Edge builds versions prior to 26.8.1 exhibit an origin validation flaw within its internal web-page verification routines. If an authenticated user navigates to a specially crafted webpage, this interaction could potentially allow a remote...

CVE-2026-45173 Idira Identity Browser Extension: Unauthorized Application Interaction via Origin Validation Failure

Idira Identity Browser Extension Chrome, Firefox, and Edge builds versions prior to 26.8.1 exhibit an origin validation flaw within its internal web-page verification routines. If an authenticated user navigates to a specially crafted webpage, this interaction could potentially allow a remote...

CVE-2026-45173 Idira Identity Browser Extension: Unauthorized Application Interaction via Origin Validation Failure

Idira Identity Browser Extension Chrome, Firefox, and Edge builds versions prior to 26.8.1 exhibit an origin validation flaw within its internal web-page verification routines. If an authenticated user navigates to a specially crafted webpage, this interaction could potentially allow a remote...