tomcat: Apache Tomcat: Denial of Service via WebSocket chat example

A flaw was found in Apache Tomcat. This uncontrolled resource consumption vulnerability, located in the WebSocket chat example, allows a remote attacker to cause a Denial of Service DoS by exhausting system resources. This can lead to the affected system becoming unresponsive or crashing...

EUVD-2026-60539

Mattermost versions 11.7.x = 11.7.6, 10.11.x = 10.11.21, 11.8.x = 11.8.3 fails to validate WebSocket command field types which allows an authenticated user to crash the plugin process and deny service to all Boards users via a customfocalboardSUBSCRIBETEAM message with a non-string teamId...

CVE-2026-10080

Mattermost versions 11.7.x = 11.7.6, 10.11.x = 10.11.21, 11.8.x = 11.8.3 fails to validate WebSocket command field types which allows an authenticated user to crash the plugin process and deny service to all Boards users via a customfocalboardSUBSCRIBETEAM message with a non-string teamId...

CVE-2026-10080 Boards plugin panics on WebSocket command with non-string field types

Mattermost versions 11.7.x = 11.7.6, 10.11.x = 10.11.21, 11.8.x = 11.8.3 fails to validate WebSocket command field types which allows an authenticated user to crash the plugin process and deny service to all Boards users via a customfocalboardSUBSCRIBETEAM message with a non-string teamId...

CVE-2026-10080

Mattermost Boards plugin panics on WebSocket custom_focalboard_SUBSCRIBE_TEAM messages with a non-string teamId, crashing the plugin and denying service to all Boards users. Affected: 11.7.x ≤ 11.7.6, 10.11.x ≤ 10.11.21, 11.8.x ≤ 11.8.3 (MMSA-2026-00687). No in-the-wild exploitation reported. Pat...

CVE-2026-73565

A flaw was found in @hono/node-server. An unauthenticated attacker can exploit this vulnerability by sending a WebSocket upgrade request with a missing or malformed Sec-WebSocket-Key header. This action causes the server to retain request data, leading to unbounded memory growth and eventually a...

CVE-2026-61666

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when th...

UBUNTU-CVE-2026-61666

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when th...

CVE-2026-59881

A flaw was found in AIOHTTP. The WebSocket client in AIOHTTP processes compressed data frames even when the compression mechanism, known as permessage-deflate, has not been properly negotiated. A malicious server can exploit this by sending specially crafted compressed frames. This can lead to...

CVE-2026-68762

In JetBrains Ktor before 3.4.1 potential DoS attack via WebSocket decompression was possible...

CVE-2026-61666 websocket-driver: Denial of service via malformed Host header

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when th...

CVE-2026-61666 websocket-driver: Denial of service via malformed Host header

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when th...

CVE-2026-61666 websocket-driver: Denial of service via malformed Host header

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when th...

CVE-2026-61666

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when th...

CVE-2026-61666

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when th...

EUVD-2026-60242

In JetBrains Ktor before 3.4.1 potential DoS attack via WebSocket decompression was possible...

CVE-2026-68762

In JetBrains Ktor before 3.4.1 potential DoS attack via WebSocket decompression was possible...

CVE-2026-68762

In JetBrains Ktor before 3.4.1 potential DoS attack via WebSocket decompression was possible...

CVE-2026-68762

In JetBrains Ktor before 3.4.1 potential DoS attack via WebSocket decompression was possible...

CVE-2026-68762

JetBrains Ktor before 3.4.1 allows a remote attacker to trigger a denial-of-service condition through WebSocket decompression; CVSS 3.1 rates it MEDIUM (5.9). Upgrade to Ktor 3.4.1. No exploitation details are provided in the documents.