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...

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...

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...

CVE-2026-45173

The CVE concerns Idira Identity Browser Extension for Chrome, Firefox, and Edge, with versions prior to 26.8.1. A flaw in origin validation within internal web-page verification routines could allow a remote attacker to trigger unauthorized application interaction or execution parameters within a...

PT-2026-48789

Name of the Vulnerable Software and Affected Versions Idira Identity Browser Extension Chrome, Firefox, and Edge builds versions prior to 26.8.1 Description An origin validation flaw exists within the internal web-page verification routines. This issue allows a remote attacker to trigger...

Origin Validation Error

Overview Affected versions of this package are vulnerable to Origin Validation Error due to the improper matching of the query destination address and port with the response source address and port when Idns is used in applications as stub resolver over UDP. Remediation A fix was pushed into the...

Origin Validation Error

Overview org.springframework.graphql:spring-graphql is a GraphQL Support for Spring Applications Affected versions of this package are vulnerable to Origin Validation Error via insufficient Origin validation for WebSocket connections. An attacker can perform Cross-Site WebSocket Hijacking CSWSH b...

CVE-2026-43972

A flaw was found in gun. A malicious or compromised HTTP/2 server can exploit an Origin Validation Error vulnerability by injecting unvalidated HTTP/2 PUSHPROMISE authority. This allows the server to plant cookies scoped to arbitrary third-party domains into the client's shared cookie store. This...

CVE-2026-43972

Origin Validation Error vulnerability in ninenines gun gunhttp2 module allows cross-origin cookie injection via unvalidated HTTP/2 PUSHPROMISE authority. In gunhttp2:pushpromiseframe/7, the :authority pseudo-header from an incoming PUSHPROMISE frame is stored verbatim into the promised stream...

EEF-CVE-2026-43972 gun HTTP/2 PUSH_PROMISE authority not validated against connection origin allows cross-origin cookie injection

Summary Origin Validation Error vulnerability in ninenines gun gunhttp2 module allows cross-origin cookie injection via unvalidated HTTP/2 PUSHPROMISE authority. In gunhttp2:pushpromiseframe/7, the :authority pseudo-header from an incoming PUSHPROMISE frame is stored verbatim into the promised...

CVE-2026-43972 gun HTTP/2 PUSH_PROMISE authority not validated against connection origin allows cross-origin cookie injection

Origin Validation Error vulnerability in ninenines gun gunhttp2 module allows cross-origin cookie injection via unvalidated HTTP/2 PUSHPROMISE authority. In gunhttp2:pushpromiseframe/7, the :authority pseudo-header from an incoming PUSHPROMISE frame is stored verbatim into the promised stream...

EUVD-2026-35073

Origin Validation Error vulnerability in ninenines gun gunhttp2 module allows cross-origin cookie injection via unvalidated HTTP/2 PUSHPROMISE authority. In gunhttp2:pushpromiseframe/7, the :authority pseudo-header from an incoming PUSHPROMISE frame is stored verbatim into the promised stream...