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CVE-2026-54309

CVE-2026-54309 · n8n: n8n MCP Browser HTTP Transport Exposes Unauthenticated Browser-Control Sessions

Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.

n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, when @n8n/mcp-browser is run in HTTP transport mode, the MCP endpoint accepts session initialization and tool invocation requests without any authentication. Any network-reachable client, or any website visited by the user, can establish an MCP session and invoke browser-control tools. Where the n8n AI Browser Bridge extension is installed and a browser connection is active, an unauthenticated caller can access browser-control capabilities including navigation, JavaScript evaluation, and cookie and storage access against the user's real browser profile. This issue only affects instances where @n8n/mcp-browser is run with the HTTP transport (--transport http). This vulnerability is fixed in 2.25.7 and 2.26.2.

CVSS 8.8 · Alta · EPSS 0,5% · Corrección disponible

Publicación
Actualización

Pila tecnológica: node

Productos y versiones afectados

  • n8n

    Versiones
    • >= 2.26.0, < 2.26.2: Afectada
    • < 2.25.7: Afectada

    Sin corrección publicada

  • n8n npm

    Intervalos de versiones afectados
    • SEMVER: ≥ 2.26.0, < 2.26.2

    Actualiza a 2.26.2

  • n8n npm

    Intervalos de versiones afectados
    • SEMVER: < 2.25.7

    Actualiza a 2.25.7

Fuentes originales

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