GitLab MCP Server < 2.1.27 - Unauthenticated SSE Transport Access

The @zereight/mcp-gitlab GitLab MCP server exposes its SSE transport endpoints without any authentication when SSE mode is enabled. An unauthenticated attacker with network access can establish an MCP session and invoke every registered tool, including uploadmarkdown, which reads arbitrary files...

damn-vulnerable-MCP-server

Compatibilidad SSE de Cursor para Damn Vulnerable MCP Este documento proporciona una visión general de las actualizaciones realizadas en el proyecto Damn Vulnerable Model Context Protocol DVMCP para hacerlo compatible con la implementación de Server-Sent Events SSE de Cursor. Resumen El proyecto...

CVE-2026-52001

An issue in geelen mcp-remote 0.1.18 through 0.1.38 allows a remote attacker to obtain sensitive information via the SSE transport eventSourceInit fetch wrapper " src/lib/utils.ts...

CVE-2026-52001

An issue in geelen mcp-remote 0.1.18 through 0.1.38 allows a remote attacker to obtain sensitive information via the SSE transport eventSourceInit fetch wrapper " src/lib/utils.ts...

CVE-2026-52001

The software geelen mcp-remote versions 0.1.18 through 0.1.38 contains a vulnerability that allows a remote attacker to obtain sensitive information . The root cause is located in the SSE transport eventSourceInit fetch wrapper within the file src/lib/utils.ts. No specific exploit details, in-the...

EUVD-2026-86021

An issue in geelen mcp-remote 0.1.18 through 0.1.38 allows a remote attacker to obtain sensitive information via the SSE transport eventSourceInit fetch wrapper " src/lib/utils.ts...

CVE-2026-61593 djust has Cross-Site Request Forgery on the Server-Sent-Events transport: a cross-origin page can drive a victim-authenticated SSE session

djust provides Phoenix LiveView-style reactive server-side rendering for Django with Rust-powered performance. Prior to version 1.0.7, the SSE client→server POST endpoints are @csrfexempt and the SSE GET stream endpoint had no Origin check, so a cross-origin page could drive a...

CVE-2026-61593

djust (a Phoenix LiveView-style reactive server-side rendering library for Django with Rust) is vulnerable to Cross-Site Request Forgery (CSRF) on its Server-Sent Events (SSE) transport prior to version 1.0.7 . The root cause: SSE POST endpoints were @csrf_exempt, the SSE GET stream endpoint lack...

djust has Cross-Site Request Forgery on the Server-Sent-Events transport: a cross-origin page can drive a victim-authenticated SSE session

Impact The SSE client→server POST endpoints are @csrfexempt and the SSE GET stream endpoint had no Origin check, so a cross-origin page could drive a victim-cookie-authenticated SSE session: force the victim's browser to GET the stream URL which creates and mounts a LiveView as the victim and POS...

@zereight/mcp-gitlab: Unauthenticated arbitrary file read via `upload_markdown` enables PAT exfiltration and full account takeover

Summary The SSE transport mode SSE=true exposes all MCP tools without any authentication. The uploadmarkdown tool reads arbitrary files from the server's local filesystem via an unsanitized filepath parameter and uploads them to a GitLab project. Combined, any unauthenticated network-reachable...

EUVD-2026-80008

@zereight/mcp-gitlab: Unauthenticated arbitrary file read via uploadmarkdown enables PAT exfiltration and full account takeover...

GHSA-CV3R-C5H8-F4G5 @zereight/mcp-gitlab: Unauthenticated arbitrary file read via `upload_markdown` enables PAT exfiltration and full account takeover

Summary The SSE transport mode SSE=true exposes all MCP tools without any authentication. The uploadmarkdown tool reads arbitrary files from the server's local filesystem via an unsanitized filepath parameter and uploads them to a GitLab project. Combined, any unauthenticated network-reachable...

CVE-2026-61560

@zereight/mcp-gitlab is a Model Context Protocol server for GitLab. Prior to version 2.1.27, the SSE transport mode SSE=true exposes all MCP tools without any authentication. The uploadmarkdown tool reads arbitrary files from the server's local filesystem via an unsanitized filepath parameter and...

CVE-2026-61560

@zereight/mcp-gitlab is a Model Context Protocol (MCP) server for GitLab. Prior to version 2.1.27 , when the SSE transport mode is enabled (SSE=true), all MCP tools are exposed without authentication. The upload_markdown tool reads arbitrary files from the server's local filesystem via an unsanit...

CVE-2026-59971

MySQL MCP Server is a Model Context Protocol server that enables secure interaction with MySQL databases. Prior to 0.4.2, setting MCPTRANSPORT=sse causes src/mysqlmcpserver/server.py to construct SseServerTransport without securitysettings or enablednsrebindingprotection, while the Starlette rout...

CVE-2026-59971 MySQL MCP Server: Missing Origin/Host Validation in SSE Transport Enables Unauthenticated SQL Execution (DNS Rebinding / Direct Exposure)

MySQL MCP Server is a Model Context Protocol server that enables secure interaction with MySQL databases. Prior to 0.4.2, setting MCPTRANSPORT=sse causes src/mysqlmcpserver/server.py to construct SseServerTransport without securitysettings or enablednsrebindingprotection, while the Starlette rout...

CVE-2026-59971 MySQL MCP Server: Missing Origin/Host Validation in SSE Transport Enables Unauthenticated SQL Execution (DNS Rebinding / Direct Exposure)

MySQL MCP Server is a Model Context Protocol server that enables secure interaction with MySQL databases. Prior to 0.4.2, setting MCPTRANSPORT=sse causes src/mysqlmcpserver/server.py to construct SseServerTransport without securitysettings or enablednsrebindingprotection, while the Starlette rout...

CVE-2026-57112 PraisonAI ToolsMCPServer legacy SSE transport accepts attacker Host/Origin and exposes registered tools

PraisonAI is a multi-agent teams system. From praisonaiagents 0.6.0 until 1.6.59 and PraisonAI 3.10.0 until 4.6.59, ToolsMCPServer.runsse in src/praisonai-agents/praisonaiagents/mcp/mcpserver.py mounts SseServerTransport on the legacy /sse and /messages/ endpoints without default Host, Origin, or...

CVE-2026-61560: Improper Limitation of a Pathname to a Restricted Directory

@zereight/mcp-gitlab is a Model Context Protocol server for GitLab. Prior to version 2.1.27, the SSE transport mode SSE=true exposes all MCP tools without any authentication. The uploadmarkdown tool reads arbitrary files from the server's local filesystem via an unsanitized filepath parameter and...

PT-2026-93172

@zereight/mcp-gitlab is a Model Context Protocol server for GitLab. Prior to version 2.1.27, the SSE transport mode SSE=true exposes all MCP tools without any authentication. The upload markdown tool reads arbitrary files from the server's local filesystem via an unsanitized file path parameter a...