CVE-2026-81099
Gravedad CVSS v4.0:
ALTA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
27/08/2026
Última modificación:
27/08/2026
Descripción
*** Pendiente de traducción *** tiger-slack started its MCP HTTP transport without enabling the host allow-list the underlying SDK provides. mcp/src/httpServer.ts called the shared httpServerFactory helper and never set the DNS-rebinding-protection option, so the transport accepted a request whatever host it named, and a page in a browser could point a name it controlled at the address the server was bound to and drive the locally reachable Slack MCP server through the visitor's browser. The fix passes the option explicitly alongside a dependency update; the update alone would not have closed it. The repository publishes no release that brackets the fix, so the affected boundary is the commit preceding it.
Impacto
Puntuación base 4.0
7.60
Gravedad 4.0
ALTA
Puntuación base 3.x
6.80
Gravedad 3.x
MEDIA