CVE-2026-43901: BX33661 Wireshark Mcp

Medium severity, CVSS 6.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Wireshark MCP is an MCP Server that turns tshark into a structured analysis interface, then layers in optional Wireshark suite utilities. In 1.1.5 and earlier, wireshark-mcp exposes a wireshark_export_objects MCP tool that accepts an attacker-controlled dest_dir parameter and passes it to tshark's --export-objects flag with no mandatory path restriction. The path sandbox (_allowed_dirs) is None by default and only activates when the environment variable WIRESHARK_MCP_ALLOWED_DIRS is explicitly set. In a default installation, any directory on the filesystem can be used as the export destination.

Affected products

• BX33661 Wireshark Mcp: up to and including 1.1.5

Published 2026-05-11. Last modified 2026-06-17.