CVE-2026-43901
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.
- CVSS 3.1
- 6.8
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N - EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 27% of CVEs (scores of 2026-10-26)
- CWE
- CWE-22
- Published
- Modified
- Record from
- the NVD, synced
Affected
- bx33661:wireshark_mcp
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-3r68-x3xc-rxpg | PyPI | wireshark-mcp | <=1.1.5 | no fix published |
| PYSEC-2026-3426 | PyPI | wireshark-mcp | <=1.1.5 | no fix published |