Submit #768129: 0xKoda WireMCP <=1.0.0 Command Injection

A command injection vulnerability exists in WireMCP due to unsafe use of child_process.exec when constructing Tshark CLI commands with user-controlled input. Successful exploitation allows attackers to execute arbitrary shell commands with the privileges of the MCP server process.The following MCP tools construct command strings using user-supplied parameters and execute them via child_process.exec:
 capture_packets: interpolates interface and duration
 get_summary_stats: interpolates interface and duration
 get_conversations: interpolates interface and duration
 check_threats: interpolates interface and duration
 analyze_pcap: interpolates pcapPath
 extract_credentials: interpolates pcapPath
Because exec invokes commands through a system shell, specially crafted input containing shell metacharacters (such as `;`, `&`, or `|`) may be interpreted as additional commands rather than treated as data.
For example, an attacker could supply a malicious value in interface to inject arbitrary shell commands, which would then be executed with the privileges of the MCP server process.
The vulnerability results from shell-based command execution combined with direct interpolation of untrusted input. In MCP environments, LLM-generated tool parameters influenced by external content may trigger execution of injected commands without direct local user interaction.

• Source: ⚠️ https://github.com/0xKoda/WireMCP/issues/12
• User: Yinci Chen (UID 94659)
• Submission: 02/26/2026 10:31 (3 months ago)
• Moderation: 03/11/2026 13:45 (13 days later)
• Status: Accepted
• VulDB entry: 350389 [0xKoda WireMCP up to 7f45f8b2b4adeb76be8c6227eefb38533fdd6b1e Tshark CLI Command index.js server.tool os command injection]
• Points: 20