CVE-2025-53818: github-kanban-mcp-server Command Injection vulnerability
Description
GitHub Kanban MCP Server is a Model Context Protocol (MCP) server for managing GitHub issues in Kanban board format and streamlining LLM task management. Versions 0.3.0 and 0.4.0 of the MCP Server are written in a way that is vulnerable to command injection vulnerability attacks as part of some of its MCP Server tool definition and implementation. The MCP Server exposes the tool `add_comment` which relies on Node.js child process API `exec` to execute the GitHub (`gh`) command, is an unsafe and vulnerable API if concatenated with untrusted user input. As of time of publication, no known patches are available.
Classification
CVE ID: CVE-2025-53818
CVSS Base Severity: HIGH
CVSS Base Score: 8.9
CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Problem Types
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Affected Products
Vendor: Sunwood-ai-labs
Product: github-kanban-mcp-server
References
https://nvd.nist.gov/vuln/detail/CVE-2025-53818https://github.com/Sunwood-ai-labs/github-kanban-mcp-server/security/advisories/GHSA-6jx8-rcjx-vmwf
https://github.com/Sunwood-ai-labs/github-kanban-mcp-server/blob/main/src/handlers/comment-handlers.ts#L8
https://github.com/Sunwood-ai-labs/github-kanban-mcp-server/blob/main/src/handlers/tool-handlers.ts#L79
https://github.com/Sunwood-ai-labs/github-kanban-mcp-server/blob/v0.4.0/src/handlers/comment-handlers.ts#L8-L23