PT-2026-50727

Name of the Vulnerable Software and Affected Versions Pipecat versions prior to 1.4.0 Description The pipecat development runner registers a /ws WebSocket endpoint for telephony testing that accepts connections without authentication. An unauthenticated remote attacker can connect to this endpoin...

GHSA-4PQM-J46F-795X Hermes Agent contains a DNS rebinding vulnerability in WebSocket endpoints that allows remote attackers to bypass Host and Origin validation

Hermes Agent before 0.16.0 contains a DNS rebinding vulnerability in WebSocket endpoints that allows remote attackers to bypass Host and Origin validation. FastAPI HTTP middleware does not execute for WebSocket upgrade requests on /api/pty, /api/ws, /api/pub, and /api/events endpoints, enabling...

Missing Authentication for Critical Function

Overview hermes-agent is a The self-improving AI agent — creates skills from experience, improves them during use, and runs anywhere Affected versions of this package are vulnerable to Missing Authentication for Critical Function in the handling of WebSocket upgrade requests on /api/pty, /api/ws,...

CVE-2026-53869

Hermes Agent before 0.16.0 contains a DNS rebinding vulnerability in WebSocket endpoints that allows remote attackers to bypass Host and Origin validation. FastAPI HTTP middleware does not execute for WebSocket upgrade requests on /api/pty, /api/ws, /api/pub, and /api/events endpoints, enabling...

Deno: Denial of service via non-ASCII bytes in WebSocket response headers

Summary A Deno program that opens a client WebSocket connection could be crashed by the remote server. While handling the WebSocket handshake response, Deno parsed the Sec-WebSocket-Protocol and Sec-WebSocket-Extensions response headers in a way that assumed their bytes were always printable ASCI...

Allocation of Resources Without Limits or Throttling

Overview undici is an An HTTP/1.1 client, written from scratch for Node.js Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the handling of WebSocket message fragments. An attacker can cause unbounded memory growth and exhaust system...

Allocation of Resources Without Limits or Throttling

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 Allocation of Resources Without Limits or Throttling via the handling of WebSocket message fragments. An attacker can cause unbounded memory growth and...

Allocation of Resources Without Limits or Throttling

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 Allocation of Resources Without Limits or Throttling via the handling of fragmented WebSocket messages. An attacker can cause unbounded memory growth and...

Allocation of Resources Without Limits or Throttling

Overview undici is an An HTTP/1.1 client, written from scratch for Node.js Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the handling of fragmented WebSocket messages. An attacker can cause unbounded memory growth and exhaust system...

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...

EUVD-2026-36729

webpack-dev-server vulnerable to HMR WebSocket interception via permissive user proxies...

GHSA-QWXF-2M7M-2M3X Daytona: Cross-tenant data leak in notification WebSocket gateway via unverified organizationId join

Summary A cross-tenant authorization flaw in Daytona's notification WebSocket gateway allowed any authenticated user to subscribe to another organization's realtime notification channel and passively receive that organization's events. Impact The notification gateway's JWT handshake joined a...

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...

CVE-2026-53869 Hermes Agent < 0.16.0 - DNS Rebinding Bypass via WebSocket Endpoints

Hermes Agent before 0.16.0 contains a DNS rebinding vulnerability in WebSocket endpoints that allows remote attackers to bypass Host and Origin validation. FastAPI HTTP middleware does not execute for WebSocket upgrade requests on /api/pty, /api/ws, /api/pub, and /api/events endpoints, enabling...

CVE-2026-9675

Impact: The undici WebSocket client enforces maxPayloadSize per-frame but does not enforce the cumulative size of fragmented uncompressed messages. A malicious WebSocket server can stream many small fragments that each pass per-frame validation but collectively exceed the configured limit, causin...

UBUNTU-CVE-2026-9675

Impact: The undici WebSocket client enforces maxPayloadSize per-frame but does not enforce the cumulative size of fragmented uncompressed messages. A malicious WebSocket server can stream many small fragments that each pass per-frame validation but collectively exceed the configured limit, causin...

CVE-2026-9675

Impact: The undici WebSocket client enforces maxPayloadSize per-frame but does not enforce the cumulative size of fragmented uncompressed messages. A malicious WebSocket server can stream many small fragments that each pass per-frame validation but collectively exceed the configured limit, causin...

CVE-2026-12151

Impact: The undici WebSocket client enforces maxPayloadSize on the cumulative byte count of fragments in a message but does not enforce a limit on the number of fragments. A malicious WebSocket server can stream many small or empty continuation frames that each pass per-frame and cumulative-size...

CVE-2026-12151

Impact: The undici WebSocket client enforces maxPayloadSize on the cumulative byte count of fragments in a message but does not enforce a limit on the number of fragments. A malicious WebSocket server can stream many small or empty continuation frames that each pass per-frame and cumulative-size...

UBUNTU-CVE-2026-12151

Impact: The undici WebSocket client enforces maxPayloadSize on the cumulative byte count of fragments in a message but does not enforce a limit on the number of fragments. A malicious WebSocket server can stream many small or empty continuation frames that each pass per-frame and cumulative-size...