undertow: undertow-websockets: Undertow: Pre-Auth DoS on websocket endpoint with @ServerEndpoint class with any @OnMessage method

A flaw was found in Undertow. A remote attacker can cause Out of Memory on websockets endpoint without authentication on any @ServerEndpoint class that has any @OnMessage method. This allows an attacker to cause Denial of Service attack without authentication and using only a standard WebSocket...

CVE-2026-69243

A flaw was found in AIOHTTP, an asynchronous HTTP client/server framework. This vulnerability allows a remote attacker to perform HTTP request smuggling due to an edge case in the WebSocket upgrade procedure. When a WebSocket upgrade request includes a body, the parser may switch protocols before...

DEBIAN-CVE-2026-15565

A flaw was found in Undertow. A remote attacker can cause Out of Memory on websockets endpoint without authentication on any @ServerEndpoint class that has any @OnMessage method. This allows an attacker to cause Denial of Service attack without authentication and using only a standard WebSocket...

CVE-2026-15565

A flaw was found in Undertow. A remote attacker can cause Out of Memory on websockets endpoint without authentication on any @ServerEndpoint class that has any @OnMessage method. This allows an attacker to cause Denial of Service attack without authentication and using only a standard WebSocket...

CVE-2026-15565 Undertow: undertow-websockets: undertow: pre-auth dos on websocket endpoint with @serverendpoint class with any @onmessage method

A flaw was found in Undertow. A remote attacker can cause Out of Memory on websockets endpoint without authentication on any @ServerEndpoint class that has any @OnMessage method. This allows an attacker to cause Denial of Service attack without authentication and using only a standard WebSocket...

CVE-2026-15565

CVE-2026-15565 affects Undertow: a flaw enables a remote attacker to cause Out of Memory on a websockets endpoint without authentication for any @ServerEndpoint class that has an @OnMessage method, resulting in Denial of Service. The issue impacts the availability of the service (CVSS v3.1: AV:N/...

EUVD-2026-55988

A flaw was found in Undertow. A remote attacker can cause Out of Memory on websockets endpoint without authentication on any @ServerEndpoint class that has any @OnMessage method. This allows an attacker to cause Denial of Service attack without authentication and using only a standard WebSocket...

CVE-2026-15565

A flaw was found in Undertow. A remote attacker can cause Out of Memory on websockets endpoint without authentication on any @ServerEndpoint class that has any @OnMessage method. This allows an attacker to cause Denial of Service attack without authentication and using only a standard WebSocket...

CVE-2026-15565

A flaw was found in Undertow. A remote attacker can cause Out of Memory on websockets endpoint without authentication on any @ServerEndpoint class that has any @OnMessage method. This allows an attacker to cause Denial of Service attack without authentication and using only a standard WebSocket...

Security Bulletin: Vulnerability in Spring-core affects IBM Netezza Appliance

Summary The Spring-core package is used by IBM Netezza Appliance . IBM Netezza Appliance has addressed the applicable CVE CVE-2026-41838 Vulnerability Details CVEID:CVE-2026-41838 DESCRIPTION: IDs for WebSocket sessions in the spring-websocket module are not cryptographically unpredictable, which...

CVE-2026-58237

WebSocket of SAP Approuter does not perform sufficient authorization checks in certain functionality. An attacker with low privileges could exploit this to access restricted functionality. Successful exploitation could allow the attacker to read sensitive information and perform limited...

EUVD-2026-55869

WebSocket of SAP Approuter does not perform sufficient authorization checks in certain functionality. An attacker with low privileges could exploit this to access restricted functionality. Successful exploitation could allow the attacker to read sensitive information and perform limited...

CVE-2026-58237

CVE-2026-58237 concerns multiple vulnerabilities in SAP Business AI Platform (Approuter). The WebSocket component allegedly fails to perform sufficient authorization checks in certain functionality, allowing a low-privileged attacker to access restricted functionality and potentially read sensiti...

PT-2026-70867

A flaw was found in search-v2-api. The authentication middleware in the affected component unconditionally skips authentication when a request includes an Upgrade: websocket header. An unauthenticated attacker can exploit this by sending a specially crafted HTTP POST request to the /federated...

PT-2026-70902

CivetWeb commit 4a4f0c95 contains a heap and stack buffer overflow vulnerability in the read websocket function that allows unauthenticated remote attackers to corrupt memory by sending compressed WebSocket frames when both USE ZLIB and MG EXPERIMENTAL INTERFACES are defined. Attackers can...

PT-2026-70029

Name of the Vulnerable Software and Affected Versions SAP Approuter affected versions not specified Description The WebSocket component of SAP Approuter fails to perform sufficient authorization checks within certain functionality. This allows an attacker with low privileges to access restricted...

PT-2026-70878

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. Prior to 3.15.186, electerm allows an authenticated WebSocket client to invoke unintended internal functions through client-controlled func values in upgrade-func in src/app/server/dispatch-center.js and...

PT-2026-70095

Name of the Vulnerable Software and Affected Versions Undertow affected versions not specified Description A flaw exists where a remote, unauthenticated attacker can trigger an Out of Memory condition on websockets endpoints. This occurs on any @ServerEndpoint class containing an @OnMessage metho...

CVE-2026-72918

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 7.10.14, 8.0.8, 8.1.7, 8.2.7, 8.3.7, 8.4.5, 8.5.2, and 8.6.1, the stream-notify-user stream in the WebSocket protocol allows an authenticated user to write arbitrary notification bodies because the sender ...

CVE-2026-72918 Rocket.Chat: Insecure implementation of websocket notifications

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 7.10.14, 8.0.8, 8.1.7, 8.2.7, 8.3.7, 8.4.5, 8.5.2, and 8.6.1, the stream-notify-user stream in the WebSocket protocol allows an authenticated user to write arbitrary notification bodies because the sender ...