PYSEC-2026-2510 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...

PYSEC-2026-2878 Pipecat: Telephony WebSocket `/ws` Unauthenticated Call-Control Abuse via Attacker-Supplied Call SID

Development Runner Telephony WebSocket /ws Unauthenticated Call-Control Abuse via Attacker-Supplied Call SID Summary The pipecat development runner registers a /ws WebSocket endpoint for telephony testing that accepts connections without any authentication. An unauthenticated remote attacker who...

PYSEC-2026-3388 Tornado has out-of-bounds memory access via C extension

Summary Tornado's optional native extension tornado.speedups implements websocketmask without validating that the mask argument is exactly four bytes long. The C function reads four bytes from mask unconditionally, even when Python passes a shorter byte string. This can read beyond the provided...

PYSEC-2026-2503 Granian vulnerable to unauthenticated DoS via WebSocket subprotocol header panic

Summary Granian aborts a worker process when an unauthenticated client sends a WebSocket upgrade request whose Sec-WebSocket-Protocol header contains non-ASCII bytes. The crash happens in Granian's WebSocket scope construction path, before the ASGI application is invoked. This is a single-request...

PYSEC-2026-2958 Prefect Unauthenticated Event Injection via /api/events/in WebSocket

A flaw has been found in PrefectHQ prefect up to 3.6.13. Affected is an unknown function of the file /api/events/in of the component WebSocket Endpoint. Executing a manipulation can lead to missing authentication. The attack may be performed from remote. The exploit has been published and may be...

PYSEC-2026-2920 PraisonAI: Unauthenticated WebSocket Endpoint Proxies to Paid OpenAI Realtime API Without Rate Limits

Summary The /media-stream WebSocket endpoint in PraisonAI's call module accepts connections from any client without authentication or Twilio signature validation. Each connection opens an authenticated session to OpenAI's Realtime API using the server's API key. There are no limits on concurrent...

PYSEC-2026-2507 ha-mcp OAuth 2.1 DCR mode enables network reconnaissance via an error oracle

Summary The ha-mcp OAuth consent form beta feature accepts a user-supplied haurl and makes a server-side HTTP request to haurl/api/config with no URL validation. An unauthenticated attacker can submit arbitrary URLs to perform internal network reconnaissance via an error oracle. Two additional co...

EUVD-2026-43299

A vulnerability has been found in will-moss Isaiah up to 1.36.9. This affects an unknown function of the file app/main.go of the component Websocket Connection Authentication. The manipulation leads to improper authentication. The attack can be initiated remotely. The pull request to fix this iss...

CVE-2026-15541

A flaw has been found in will-moss Isaiah up to 1.36.9. The impacted element is the function Server.Handle of the file app/server/server/server.go of the component Master Websocket Handler. Executing a manipulation of the argument Agent can lead to missing authorization. It is possible to launch...

CVE-2026-15542

A vulnerability has been found in will-moss Isaiah up to 1.36.9. This affects an unknown function of the file app/main.go of the component Websocket Connection Authentication. The manipulation leads to improper authentication. The attack can be initiated remotely. The pull request to fix this iss...

CVE-2026-15542 will-moss Isaiah Websocket Connection Authentication main.go improper authentication

A vulnerability has been found in will-moss Isaiah up to 1.36.9. This affects an unknown function of the file app/main.go of the component Websocket Connection Authentication. The manipulation leads to improper authentication. The attack can be initiated remotely. The pull request to fix this iss...

CVE-2026-15542

This CVE affects will-moss Isaiah up to version 1.36.9, specifically the Websocket Connection Authentication component (file app/main.go). The underlying issue is in an unknown function that leads to improper authentication, with the attack described as remote. A fix is not yet merged; the pull r...

CVE-2026-15542 will-moss Isaiah Websocket Connection Authentication main.go improper authentication

A vulnerability has been found in will-moss Isaiah up to 1.36.9. This affects an unknown function of the file app/main.go of the component Websocket Connection Authentication. The manipulation leads to improper authentication. The attack can be initiated remotely. The pull request to fix this iss...

CVE-2026-15541 will-moss Isaiah Master Websocket server.go Server.Handle authorization

A flaw has been found in will-moss Isaiah up to 1.36.9. The impacted element is the function Server.Handle of the file app/server/server/server.go of the component Master Websocket Handler. Executing a manipulation of the argument Agent can lead to missing authorization. It is possible to launch...

CVE-2026-15541 will-moss Isaiah Master Websocket server.go Server.Handle authorization

A flaw has been found in will-moss Isaiah up to 1.36.9. The impacted element is the function Server.Handle of the file app/server/server/server.go of the component Master Websocket Handler. Executing a manipulation of the argument Agent can lead to missing authorization. It is possible to launch...

CVE-2026-15541 will-moss Isaiah Master Websocket server.go Server.Handle authorization

A flaw has been found in will-moss Isaiah up to 1.36.9. The impacted element is the function Server.Handle of the file app/server/server/server.go of the component Master Websocket Handler. Executing a manipulation of the argument Agent can lead to missing authorization. It is possible to launch...

CVE-2026-15541

CVE-2026-15541 affects will-moss Isaiah up to version 1.36.9. The flaw resides in the Master Websocket Handler’s Server.Handle function (file app/server/server/server.go). A manipulation of the Agent argument can lead to missing authorization, enabling a remote attack. The issue is awaiting a pul...

CVE-2026-58208

A flaw was found in NATS Server. An unauthenticated client with access to the WebSocket listener could exploit a vulnerability where requests for the MQTT-over-WebSocket path were incorrectly routed into MQTT handling, even when MQTT was not configured. This allowed the client to access...

PT-2026-57899

OpenClaw before 2026.6.6 contains a policy bypass vulnerability in browser CDP discovery that accepts blocked WebSocket URLs. Attackers with lower-trust access can reach network destinations that should have been blocked by OpenClaw policy when the affected feature is enabled...

PT-2026-59655

Impact There are two specific configurations of the python-engineio server in which the size of incoming messages is not checked before the messages are loaded into memory. An attacker can take advantage of these to cause unnecessary memory allocations in the python-engineio server. The two cases...