CVE-2026-43901

Published: May 11, 2026Modified: Jun 17, 2026

6.8

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Exploitability: 1.6 / Impact: 5.2

Source: security-advisories@github.com (Secondary)

Description

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 (1)

Products: Bx33661: Wireshark Mcp

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Bx33661 Wireshark Mcp	Up to 1.1.5

Related CWEs

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (2)

https://github.com/bx33661/Wireshark-MCP/security/advisories/GHSA-3r68-x3xc-rxpg

Source: security-advisories@github.com

ExploitMitigationPatchVendor Advisory

https://github.com/bx33661/Wireshark-MCP/security/advisories/GHSA-3r68-x3xc-rxpg

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

ExploitMitigationPatchVendor Advisory

Timeline

No history available yet.