PT-2026-43070

Name of the Vulnerable Software and Affected Versions hackney versions 2.0.0 through 4.0.0 Description The WebSocket client in src/hackney ws.erl lacks upper bounds on memory consumption across three code paths, allowing for flooding. First, the read handshake response/3 function accumulates...

Hackney security vulnerabilities

Hackney is a program library from Hackney, Inc. A security vulnerability exists in Hackney versions prior to 2.0.0 through 4.0.1, which stems from a WebSocket client that does not set an upper limit on memory consumption, potentially leading to resource exhaustion...

OSWE-Notes

OSWE Exploit Helpers Helper modules for writing OSWE exploit...

ROS-20260524-73-0045

A vulnerability in the Jenkins Automation Server built-in command line interface CLI is related to the dependency of critical actions on reverse DNS resolution. Exploitation of the vulnerability could allow a remote attacker to realize a CSWSH Cross-Site WebSocket Hijacking attack...

CLSA-2026-1779580341 qemu-kvm: Fix of CVE-2025-11234

CVE-2025-11234: io: use-after-free in websocket handshake code - Bump leading release 14 - 15 to overcome rpm-version-rank trap: previously released wrong-dist builds tagged .el9 outrank the correctly-tagged .el92 builds, blocking the proper release to stable. No source/code changes vs els9...

Denial Of Service (DoS)

OpenClaw is vulnerable to a Denial Of Service DoS. The vulnerability is due to improper validation of oversized frames in the voice-call realtime WebSocket path, which allows a remote attacker to send oversized WebSocket frames and cause service unavailability...

GHSA-HVV7-HFRH-7GXJ Nezha Monitoring: Nezha WebSocket server stream discloses cross-tenant server telemetry to authenticated members

Summary Any authenticated non-admin member can connect to the server-status WebSocket and receive telemetry for all servers, including servers owned by other users. The normal server list API filters objects by HasPermission, but the WebSocket stream treats the presence of any authenticated user ...

Nezha Monitoring: Nezha WebSocket server stream discloses cross-tenant server telemetry to authenticated members

Summary Any authenticated non-admin member can connect to the server-status WebSocket and receive telemetry for all servers, including servers owned by other users. The normal server list API filters objects by HasPermission, but the WebSocket stream treats the presence of any authenticated user ...

PT-2026-42872

Name of the Vulnerable Software and Affected Versions Nezha Monitoring versions 1.4.0 through 2.0.8 Description Authenticated non-admin members can connect to the server-status WebSocket endpoint '/api/v1/ws/server' and receive telemetry for all servers, including those owned by other users. Whil...

MAL-2026-4345 Malicious code in eo-terminal (npm)

Part of a multi-package malicious campaign by npm author toskypi, eo-terminal is a fully-featured infostealer and remote access trojan RAT disguised as "terminal changelog logger utilities." The package README describes a completely different package terminal-logger-utils, indicating a...

Memory Allocation with Excessive Size Value

Overview Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in the WebSocket process. An attacker can cause the server to crash and disrupt service availability for all users by sending a specially crafted binary WebSocket message to the public endpoin...

Memory Allocation with Excessive Size Value

Overview Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in the WebSocket process. An attacker can cause the server to crash and disrupt service availability for all users by sending a specially crafted binary WebSocket message to the public endpoin...

CVE-2026-5740

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to properly validate msgpack-encoded WebSocket frames before memory allocation which allows an unauthenticated remote attacker to crash the server process and cause a full service outage for all users v...

CVE-2026-5740

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to properly validate msgpack-encoded WebSocket frames before memory allocation which allows an unauthenticated remote attacker to crash the server process and cause a full service outage for all users v...

CVE-2026-5740

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to properly validate msgpack-encoded WebSocket frames before memory allocation which allows an unauthenticated remote attacker to crash the server process and cause a full service outage for all users v...

CVE-2026-5740

Mattermost CVE-2026-5740 is an unauthenticated denial-of-service issue affecting Mattermost Server versions 11.6.x up to 11.6.0, 11.5.x up to 11.5.3, 11.4.x up to 11.4.4, and 10.11.x up to 10.11.14. The root cause is improper validation of msgpack-encoded WebSocket frames before memory allocation...

CVE-2026-5740 Unauthenticated WebSocket binary frame causes denial of service in Mattermost Server

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to properly validate msgpack-encoded WebSocket frames before memory allocation which allows an unauthenticated remote attacker to crash the server process and cause a full service outage for all users v...

EUVD-2026-31426

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to properly validate msgpack-encoded WebSocket frames before memory allocation which allows an unauthenticated remote attacker to crash the server process and cause a full service outage for all users v...

CVE-2026-5740 Unauthenticated WebSocket binary frame causes denial of service in Mattermost Server

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to properly validate msgpack-encoded WebSocket frames before memory allocation which allows an unauthenticated remote attacker to crash the server process and cause a full service outage for all users v...

CVE-2026-5740 Unauthenticated WebSocket binary frame causes denial of service in Mattermost Server

Mattermost versions 11.6.x = 11.6.0, 11.5.x = 11.5.3, 11.4.x = 11.4.4, 10.11.x = 10.11.14 fail to properly validate msgpack-encoded WebSocket frames before memory allocation which allows an unauthenticated remote attacker to crash the server process and cause a full service outage for all users v...