Allocation of Resources Without Limits or Throttling Affecting @modelcontextprotocol/server package, versions >=2.0.0 <2.1.0
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- published27 Oct 2026
- disclosed27 Oct 2026
- creditCyber Craft Solutions, HE WEI (ギカク), Jvr2022, Ali Sadeghi, mohammad228, Shmulik Cohen, JustasMonkev, subchat
Introduced: 27 Oct 2026
New CVE NOT AVAILABLE CWE-770 (opens in a new tab)How to fix?
Upgrade @modelcontextprotocol/server to version 2.1.0 or higher.
Overview
@modelcontextprotocol/server is a Model Context Protocol implementation for TypeScript - Server package
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via unbounded HTTP request body reading in the Hono middleware handler. An unauthenticated attacker can send an arbitrarily large JSON request body or an unbounded JSON-RPC batch, causing the server to consume excessive memory and crash.