CVE-2026-47124 Nezha WebSocket server stream discloses cross-tenant server telemetry to authenticated members

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.4.0 to before version 2.0.9, any authenticated non-admin member can connect to the server-status WebSocket and receive telemetry for all servers, including servers owned by other users...

CVE-2026-47124

CVE-2026-47124 (Nezha Monitoring) : In versions 1.4.0 through before 2.0.9, any authenticated non-admin user can connect to the server-status WebSocket and receive telemetry for all servers, including those owned by other users. The WebSocket stream bypasses per-server HasPermission checks, retur...

EUVD-2026-36594

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.4.0 to before version 2.0.9, any authenticated non-admin member can connect to the server-status WebSocket and receive telemetry for all servers, including servers owned by other users...

CVE-2026-47124 Nezha WebSocket server stream discloses cross-tenant server telemetry to authenticated members

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.4.0 to before version 2.0.9, any authenticated non-admin member can connect to the server-status WebSocket and receive telemetry for all servers, including servers owned by other users...

CVE-2026-47124 Nezha WebSocket server stream discloses cross-tenant server telemetry to authenticated members

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.4.0 to before version 2.0.9, any authenticated non-admin member can connect to the server-status WebSocket and receive telemetry for all servers, including servers owned by other users...

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...

Buffer Over-read

Overview tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. Affected versions of this package are vulnerable to Buffer Over-read via the websocketmask function in the speedups component. An attacker can trigger a read past the end of the mas...

CVE-2026-3433

Mattermost versions 11.6.x = 11.6.1, 11.5.x = 11.5.4, 10.11.x = 10.11.15, 10.11.x = 10.11.16 fail to restrict roleupdated websocket event broadcasts to members of the affected team or channel which allows an authenticated attacker with guest-level access to observe permission scheme change...

CVE-2026-3433

Mattermost is affected in versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15, 10.11.x

EUVD-2026-36498

Mattermost versions 11.6.x = 11.6.1, 11.5.x = 11.5.4, 10.11.x = 10.11.15, 10.11.x = 10.11.16 fail to restrict roleupdated websocket event broadcasts to members of the affected team or channel which allows an authenticated attacker with guest-level access to observe permission scheme change...

CVE-2026-3433 Mattermost fails to scope role_updated websocket events to authorized team and channel members

Mattermost versions 11.6.x = 11.6.1, 11.5.x = 11.5.4, 10.11.x = 10.11.15, 10.11.x = 10.11.16 fail to restrict roleupdated websocket event broadcasts to members of the affected team or channel which allows an authenticated attacker with guest-level access to observe permission scheme change...

CVE-2026-3433 Mattermost fails to scope role_updated websocket events to authorized team and channel members

Mattermost versions 11.6.x = 11.6.1, 11.5.x = 11.5.4, 10.11.x = 10.11.15, 10.11.x = 10.11.16 fail to restrict roleupdated websocket event broadcasts to members of the affected team or channel which allows an authenticated attacker with guest-level access to observe permission scheme change...

CVE-2026-3433 Mattermost fails to scope role_updated websocket events to authorized team and channel members

Mattermost versions 11.6.x = 11.6.1, 11.5.x = 11.5.4, 10.11.x = 10.11.15, 10.11.x = 10.11.16 fail to restrict roleupdated websocket event broadcasts to members of the affected team or channel which allows an authenticated attacker with guest-level access to observe permission scheme change...

OESA-2026-2667 libsoup3 security update

Libsoup is an HTTP library implementation in C. It was originally part of a SOAP Simple Object Access Protocol implementation called Soup, but the SOAP and non-SOAP parts have now been split into separate packages. Security Fixes: A flaw was found in libsoup. The SoupWebsocketConnection may accep...

OESA-2026-2666 libsoup3 security update

Libsoup is an HTTP library implementation in C. It was originally part of a SOAP Simple Object Access Protocol implementation called Soup, but the SOAP and non-SOAP parts have now been split into separate packages. Security Fixes: A flaw was found in libsoup. The SoupWebsocketConnection may accep...

OESA-2026-2618 libsoup security update

libsoup is an HTTP client/server library for GNOME. It uses GObjects and the glib main loop, to integrate well with GNOME applications, and also has a synchronous API, for use in threaded applications. Security Fixes: A flaw was found in libsoup. The SoupWebsocketConnection may accept a large...

OESA-2026-2617 libsoup security update

libsoup is an HTTP client/server library for GNOME. It uses GObjects and the glib main loop, to integrate well with GNOME applications, and also has a synchronous API, for use in threaded applications. Security Fixes: A flaw was found in libsoup. The SoupWebsocketConnection may accept a large...

Security Bulletin: IBM Event Processing is affected by Multiple vulnerabilities

Summary IBM Event Processing is affected by Multiple vulnerabilities and were addressed in IBM Event Processing version 1.5.3 Vulnerability Details CVEID:CVE-2026-27148 DESCRIPTION: Storybook is a frontend workshop for building user interface components and pages in isolation. Prior to versions...

PT-2026-49059

Name of the Vulnerable Software and Affected Versions Tornado versions prior to 6.5.6 Description The optional native extension tornado.speedups implements the websocket mask function without validating that the mask argument is exactly four bytes long. The C function reads four bytes from mask...

PT-2026-49025

OpenClaw before 2026.5.18 accepts WebSocket client-declared operator scopes before binding to server-approved pairing or trusted-proxy authorization baseline. Unpaired or restricted trusted-proxy Control UI clients can obtain cached operator.admin authority on live WebSocket connections to execut...