AIKIDO-2026-683378
mcp_dart is vulnerable to Denial of Service (DoS)
65
Medium Risk
This Affects:
mcp_dartTL;DR
mcp_dart's stdio, IO stream, and server stdio transports buffer each incoming newline-delimited message in a ReadBuffer that appends bytes without any per message size limit. A peer process that writes bytes continuously without a newline delimiter grows that buffer without bound, exhausting process memory and crashing the host or client process. The fix adds a default 10 MiB maxIncomingMessageBytes limit, clears the buffer, reports an error, and closes the affected transport once a message exceeds it.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you use the stdio, server stdio, or IO stream transports to exchange messages with a peer that may be unreliable or not fully trusted.
Background info
mcp_dart is vulnerable to Denial of Service (DoS) in versions 0.0.1 - 2.4.1.
How to fix this
Upgrade the mcp_dart library to the patch version.
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SOC 2Compliant
ISO 27001CompliantISO 42001Compliant
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