CVE-2026-33032

CVE-2026-33032 / MCPwn Non-destructive detection tooling for the nginx-ui MCP authentication bypass known publicly as MCPwn. Ship a two-HTTP-request unauthenticated takeover of any nginx-ui instance running a vulnerable version. Table of Contents 1. Quick Facts 2. Vulnerability Overview 3...

cve-2026-33032-scanner

CVE-2026-33032 Scanner Non-destructive vulnerability scanner for Nginx-UI MCP Endpoint Authentication Bypass Vulnerability Overview CVE-2026-33032 is an authentication bypass vulnerability in nginx-ui's Model Context Protocol MCP integration. The /mcpmessage endpoint lacks authentication middlewa...

siyuan-mcp-admin-takeover-cve-2026-66012-missing-authorization

CVE-2026-66012 — Toma de control del administrador sin autenticación en SiYuan MCP Prueba de concepto para CVE-2026-66012 CVSS 10.0 Crítico, una vulnerabilidad de autorización faltante en el endpoint MCP Model Context Protocol de SiYuan que permite a un atacante no autenticado lograr la toma de...

nightingale

Experto en alertas de código abierto English | 中文 🎯 Qué es Nightingale Nightingale es un proyecto de monitoreo de código abierto centrado en las alertas. Al igual que Grafana, Nightingale también se conecta con diversas fuentes de datos existentes. Sin embargo, mientras que Grafana hace hincapié ...

CVE-2026-61742 DBHub HTTP transport DNS rebinding allows unauthenticated browser-origin SQL execution

DBHub is a database MCP server for Postgres, MySQL, SQL Server, Oracle, MariaDB, SQLite. Versions prior to 0.22.5 expose an unauthenticated HTTP MCP endpoint when started with the documented HTTP transport mode, for example --transport http --port 8080. The HTTP server attempts to protect...

CVE-2026-61742 DBHub HTTP transport DNS rebinding allows unauthenticated browser-origin SQL execution

DBHub is a database MCP server for Postgres, MySQL, SQL Server, Oracle, MariaDB, SQLite. Versions prior to 0.22.5 expose an unauthenticated HTTP MCP endpoint when started with the documented HTTP transport mode, for example --transport http --port 8080. The HTTP server attempts to protect...

PT-2026-98194

Name of the Vulnerable Software and Affected Versions DBHub versions prior to 0.22.5 Description DBHub exposes an unauthenticated HTTP MCP endpoint when started in HTTP transport mode. The server attempts to prevent browser-origin access by verifying that the Origin hostname matches the Host...

CVE-2026-77254 MCP Atlassian: Unauthenticated HTTP MCP requests can use globally configured Jira and Confluence credentials

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, requests to the HTTP MCP endpoint without a per-user identity are allowed to reach tool handlers, which then use globally configured Jira or Confluence credentials. A network caller c...

EUVD-2026-84743

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, requests to the HTTP MCP endpoint without a per-user identity are allowed to reach tool handlers, which then use globally configured Jira or Confluence credentials. A network caller c...

CVE-2026-77254 MCP Atlassian: Unauthenticated HTTP MCP requests can use globally configured Jira and Confluence credentials

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, requests to the HTTP MCP endpoint without a per-user identity are allowed to reach tool handlers, which then use globally configured Jira or Confluence credentials. A network caller c...

CVE-2026-77254 MCP Atlassian: Unauthenticated HTTP MCP requests can use globally configured Jira and Confluence credentials

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, requests to the HTTP MCP endpoint without a per-user identity are allowed to reach tool handlers, which then use globally configured Jira or Confluence credentials. A network caller c...

CVE-2026-77254: Missing Authentication for Critical Function

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, requests to the HTTP MCP endpoint without a per-user identity are allowed to reach tool handlers, which then use globally configured Jira or Confluence credentials. A network caller c...

CVE-2026-77519

MaxKB is an open-source AI assistant for enterprise. In 2.10.2-lts and earlier, the /chat/api/mcp authentication path looks up an ApplicationApiKey using only its secret and active status, without enforcing the ispermanent and expiretime checks used by the standard chat API. A previously valid,...

CVE-2026-77519 MaxKB: Expired application API keys remain usable on `/chat/api/mcp`

MaxKB is an open-source AI assistant for enterprise. In 2.10.2-lts and earlier, the /chat/api/mcp authentication path looks up an ApplicationApiKey using only its secret and active status, without enforcing the ispermanent and expiretime checks used by the standard chat API. A previously valid,...

CVE-2026-61568

@zereight/mcp-gitlab is a Model Context Protocol server for GitLab. Versions prior to 2.1.30 expose the Streamable HTTP MCP endpoint without an effective Host or Origin allowlist. A malicious web page can use DNS rebinding to route browser requests to a victim's local MCP listener while preservin...

EUVD-2026-79999

@zereight/mcp-gitlab is a Model Context Protocol server for GitLab. Versions prior to 2.1.30 expose the Streamable HTTP MCP endpoint without an effective Host or Origin allowlist. A malicious web page can use DNS rebinding to route browser requests to a victim's local MCP listener while preservin...

PT-2026-91938

Name of the Vulnerable Software and Affected Versions Casdoor versions prior to 4.4.1 Description An authorization bypass exists in the '/api/mcp' endpoint. Attackers possessing a valid clientId and clientSecret from any single application can gain unrestricted access to user administration acros...

CVE-2026-61568: Reliance on Reverse DNS Resolution for a Security-Critical Action

@zereight/mcp-gitlab is a Model Context Protocol server for GitLab. Versions prior to 2.1.30 expose the Streamable HTTP MCP endpoint without an effective Host or Origin allowlist. A malicious web page can use DNS rebinding to route browser requests to a victim's local MCP listener while preservin...

Security Bulletin: Langflow is vulnerable to authentication bypass and insufficient session expiration

Summary Langflow provides API key-based authentication for programmatic access to flow execution and MCP endpoints. The MCP HTTP API credential resolvers do not apply the same AUTOLOGIN API-key guard that all standard authenticated endpoints enforce; when Langflow is in its default AUTOLOGIN...

CVE-2026-59822

A flaw was found in LiteLLM, a proxy server designed for Large Language Model LLM APIs. An unauthenticated attacker could exploit a vulnerability in the MCP Streamable HTTP endpoint. By using a fabricated Authorization header, the attacker could bypass the standard key validation, gaining...