com.agentsflex:agents-flex-bom (>=2.1.1 <=2.1.7), com.agentsflex:agents-flex-mcp (>=2.0.0 <=2.1.7) +28 more potentially affected by CVE-2026-34237 via io.modelcontextprotocol.sdk:mcp-core (>=1.0.0-RC3 <=1.0.0)

io.modelcontextprotocol.sdk:mcp-core MAVEN version =1.0.0-RC3, =2.1.1, =2.0.0, =2.1.1, =2.0.4, =0.1.1, =0.1.1, =0.158.v8e18e64dd93c, =0.174.v2747878aeedb - io.micronaut.mcp:micronaut-mcp-client-java-sdk =1.0.0-M2 - io.micronaut.mcp:micronaut-mcp-server-java-sdk =1.0.0-M2 -...

CVE-2026-33946

MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to version 0.9.2, the Ruby SDK's streamablehttptransport.rb implementation contains a session hijacking vulnerability. An attacker who obtains a valid session ID can completely hijack the victim's...

nginx-ui's Unauthenticated MCP Endpoint Allows Remote Nginx Takeover

Summary The nginx-ui MCP Model Context Protocol integration exposes two HTTP endpoints: /mcp and /mcpmessage. While /mcp requires both IP whitelisting and authentication AuthRequired middleware, the /mcpmessage endpoint only applies IP whitelisting - and the default IP whitelist is empty, which t...

nginx-ui's Unauthenticated MCP Endpoint Allows Remote Nginx Takeover

The nginx-ui MCP Model Context Protocol integration exposes two HTTP endpoints: /mcp and /mcpmessage. While /mcp requires both IP whitelisting and authentication AuthRequired middleware, the /mcpmessage endpoint only applies IP whitelisting - and the default IP whitelist is empty, which the...

CVE-2026-31951

LibreChat is a ChatGPT clone with additional features. In versions 0.8.2-rc1 through 0.8.3-rc1, user-created MCP Model Context Protocol servers can include arbitrary HTTP headers that undergo credential placeholder substitution. An attacker can create a malicious MCP server with headers containin...

CVE-2026-33946

MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to version 0.9.2, the Ruby SDK's streamablehttptransport.rb implementation contains a session hijacking vulnerability. An attacker who obtains a valid session ID can completely hijack the victim's...

CVE-2026-33980 Azure Data Explorer MCP Server: KQL Injection in multiple tools allows MCP client to execute arbitrary Kusto queries

Azure Data Explorer MCP Server is a Model Context Protocol MCP server that enables AI assistants to execute KQL queries and explore Azure Data Explorer ADX/Kusto databases through standardized interfaces. Versions up to and including 0.1.1 contain KQL Kusto Query Language injection vulnerabilitie...

CVE-2026-33946

MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to version 0.9.2, the Ruby SDK's streamablehttptransport.rb implementation contains a session hijacking vulnerability. An attacker who obtains a valid session ID can completely hijack the victim's...

EUVD-2026-16866

MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to version 0.9.2, the Ruby SDK's streamablehttptransport.rb implementation contains a session hijacking vulnerability. An attacker who obtains a valid session ID can completely hijack the victim's...

CVE-2026-33946

The CVE affects the MCP Ruby SDK prior to 0.9.2. In streamable_http_transport.rb, an attacker with a valid session ID can hijack the victim’s SSE stream and intercept real-time data, due to insufficient session binding. Version 0.9.2 patches this. No additional exploit details are provided beyond...

CVE-2026-31951 LibreChat's MCP Server Header Injection Enables OAuth Token Theft

LibreChat is a ChatGPT clone with additional features. In versions 0.8.2-rc1 through 0.8.3-rc1, user-created MCP Model Context Protocol servers can include arbitrary HTTP headers that undergo credential placeholder substitution. An attacker can create a malicious MCP server with headers containin...

CVE-2026-31951

Vulnerability summary : LibreChat’s MCP server feature (versions 0.8.2-rc1 to 0.8.3-rc1) allows arbitrary HTTP headers that undergo credential placeholder substitution. An attacker can host a malicious MCP server with headers like {{LIBRECHAT_OPENID_ACCESS_TOKEN}} to exfiltrate victims’ OAuth tok...

EUVD-2026-16769

LibreChat is a ChatGPT clone with additional features. In versions 0.8.2-rc1 through 0.8.3-rc1, user-created MCP Model Context Protocol servers can include arbitrary HTTP headers that undergo credential placeholder substitution. An attacker can create a malicious MCP server with headers containin...

CVE-2026-31951 LibreChat's MCP Server Header Injection Enables OAuth Token Theft

LibreChat is a ChatGPT clone with additional features. In versions 0.8.2-rc1 through 0.8.3-rc1, user-created MCP Model Context Protocol servers can include arbitrary HTTP headers that undergo credential placeholder substitution. An attacker can create a malicious MCP server with headers containin...

CVE-2026-31951

LibreChat is a ChatGPT clone with additional features. In versions 0.8.2-rc1 through 0.8.3-rc1, user-created MCP Model Context Protocol servers can include arbitrary HTTP headers that undergo credential placeholder substitution. An attacker can create a malicious MCP server with headers containin...

CVE-2026-31951 LibreChat's MCP Server Header Injection Enables OAuth Token Theft

LibreChat is a ChatGPT clone with additional features. In versions 0.8.2-rc1 through 0.8.3-rc1, user-created MCP Model Context Protocol servers can include arbitrary HTTP headers that undergo credential placeholder substitution. An attacker can create a malicious MCP server with headers containin...

MCP Ruby SDK 安全漏洞

MCP Ruby SDK is an open-source development toolkit for building and interacting with Model Context Protocol clients. Versions of the MCP Ruby SDK prior to 0.9.2 contained security vulnerabilities. These vulnerabilities stemmed from issues with the streamablehttptransport.rb implementation, which...

PT-2026-28576

Name of the Vulnerable Software and Affected Versions MCP Ruby SDK versions prior to 0.9.2 Description The Ruby SDK for Model Context Protocol servers and clients contains a session hijacking issue in its streamable http transport.rb implementation. An attacker obtaining a valid session ID can...

PT-2026-28582

Name of the Vulnerable Software and Affected Versions Azure Data Explorer MCP Server versions prior to commit 0abe0ee55279e111281076393e5e966335fffd30 Azure Data Explorer MCP Server versions up to and including 0.1.1 Description Azure Data Explorer MCP Server, a Model Context Protocol MCP server,...

PT-2026-28432

Name of the Vulnerable Software and Affected Versions LibreChat versions 0.8.2-rc1 through 0.8.3-rc1 Description LibreChat, a ChatGPT clone, has an issue where user-created Model Context Protocol MCP servers can include arbitrary HTTP headers. These headers are subject to credential placeholder...