CVE-2026-107928

When curl is built with GnuTLS, a malicious WebSocket server can make curl send memory past its send buffer. This is due to an out of bounds read following when gnutlsrecordsend returns a number of bytes sent greater than the number of bytes it was given to send. GnuTLS does that after a blocked...

Google Chrome Vulnerability: CVE-2026-113037

Use after free in WebSockets in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. Chromium security severity: Medium...

PT-2026-118734

Name of the Vulnerable Software and Affected Versions Google Chrome versions prior to 156.0.8078.47 Description A use after free issue exists in the WebSockets component. This occurs when a program continues to use a pointer after it has been freed, which can lead to memory corruption. A remote...

reinschauer

Reinschauer A PoC to remotely control Windows machines over Websockets. Check out my blog for a writeup. Can be executed as Go exe, .NET/C exe and in-memory using BOF.NET and Cobaltstrike. Traffic can be tunneled via an interactive Beacon connection. Other than most HVNC implementations,...

CVE-2026-67411

A flaw was found in rabbitmq-server. When native Message Queuing Telemetry Transport MQTT or MQTT over WebSockets operates behind a trusted proxy utilizing the PROXY protocol, the broker may drop the client IP address before enforcing user restriction checks. This failure causes external...

curl: curl: info leak uploading over WebSockets with GnuTLS

A flaw was found in curl. When curl is built with the GnuTLS library, a blocked transmission during communication with a malicious WebSocket server can trigger an out-of-bounds memory read. A malicious server can exploit this flaw to expose sensitive data from neighboring memory buffers or crash...

CURL-CVE-2026-107928 info leak uploading over WebSockets with GnuTLS

When curl is built with GnuTLS, a malicious WebSocket server can make curl send memory past its send buffer. This is due to an out of bounds read following when gnutlsrecordsend returns a number of bytes sent greater than the number of bytes it was given to send. GnuTLS does that after a blocked...

WS_RaceCondition_PoC

Race Conditions in Websockets In the field of information technology, ensuring data reliability and integrity is crucial, especially with millions of users and terabytes of data in the mix. However, as software systems become more complex, issues such as race conditions can arise, significantly...

CVE-2026-108714

MCP Kotlin SDK through 0.15.0 contains an uncontrolled memory allocation vulnerability that allows remote clients to exhaust server memory because Application.mcpWebSocket installs Ktor WebSockets without a maxFrameSize limit. Attackers can send small frame headers declaring payloads near 2 GiB...

CVE-2026-108714

The MCP Kotlin SDK (versions through 0.15.0 ) is vulnerable to a memory exhaustion issue via the Application.mcpWebSocket component. The root cause is that the SDK installs Ktor WebSockets without enforcing a maxFrameSize limit. An attacker can exploit this by sending small frame headers that dec...

CVE-2026-108714 MCP Kotlin SDK through 0.15.0 Memory Exhaustion via Application.mcpWebSocket

MCP Kotlin SDK through 0.15.0 contains an uncontrolled memory allocation vulnerability that allows remote clients to exhaust server memory because Application.mcpWebSocket installs Ktor WebSockets without a maxFrameSize limit. Attackers can send small frame headers declaring payloads near 2 GiB...

CVE-2026-108714 MCP Kotlin SDK through 0.15.0 Memory Exhaustion via Application.mcpWebSocket

MCP Kotlin SDK through 0.15.0 contains an uncontrolled memory allocation vulnerability that allows remote clients to exhaust server memory because Application.mcpWebSocket installs Ktor WebSockets without a maxFrameSize limit. Attackers can send small frame headers declaring payloads near 2 GiB...

EUVD-2026-96988

MCP Kotlin SDK through 0.15.0 contains an uncontrolled memory allocation vulnerability that allows remote clients to exhaust server memory because Application.mcpWebSocket installs Ktor WebSockets without a maxFrameSize limit. Attackers can send small frame headers declaring payloads near 2 GiB...

CVE-2026-108714: Allocation of Resources Without Limits or Throttling

MCP Kotlin SDK through 0.15.0 contains an uncontrolled memory allocation vulnerability that allows remote clients to exhaust server memory because Application.mcpWebSocket installs Ktor WebSockets without a maxFrameSize limit. Attackers can send small frame headers declaring payloads near 2 GiB...

PT-2026-110117

Name of the Vulnerable Software and Affected Versions MCP Kotlin SDK versions prior to 0.15.1 Description An uncontrolled memory allocation issue exists because Application.mcpWebSocket installs Ktor WebSockets without a maxFrameSize limit. Remote clients can exploit this by sending small frame...

curl: CVE-2026-107928: info leak uploading over WebSockets with GnuTLS

Summary: When curl is built with GnuTLS, a malicious WebSocket server can make curl -T wss://... send memory past curl's WebSocket send buffer. This is due to an out of bounds read in gtlssend, which doesn't handle if gnutlsrecordsend returns a number of bytes sent greater than the number of byte...

Astra Linux – Vulnerability in Chromium

Before version 151.0.7922.72, using WebSockets with Google Chrome allowed a remote attacker to potentially perform a sandbox escape through a crafted HTML page. Chromium security severity: Low...

Astra Linux – Vulnerability in Chromium

Before version 88.0.4324.182, using use after free in Web Sockets with Google Chrome on Linux allowed a remote attacker to potentially exploit heap corruption through a crafted HTML page...

Astra Linux – Vulnerability in Chromium

Insufficient validation of untrusted inputs in WebSockets in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. Chromium security severity: Medium...

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...