Claude Agent SDK: Argument Injection via resume Option Allows Arbitrary Command Execution

影響: pip:claude-agent-sdk < 0.2.121 → 0.2.121

The Claude Agent SDK for Python passed the resume option to the Claude CLI without validation, allowing a value beginning with - to be interpreted as a separate CLI flag. An attacker who controlled the resume value could inject an --mcp-config flag defining a stdio MCP server, resulting in arbitrary command execution at CLI startup that bypassed the SDK's permission controls. Exploitation required an application to pass untrusted input as the session ID to resume. Users are advised to update to…

GitHub Advisory Databaseで読む

2026/10/17 04:44、GitHub Advisory Databaseが「Claude Agent SDK: Argument Injection via resume Option Allows Arbitrary Command Execution」を公開しました (種別: 脆弱性アドバイザリ)。重大度は「緊急」(critical) です。関連する技術: Python、Anthropic (Claude)。CVE: CVE-2026-96620。