CVE-2026-55157
Token Optimizer MCP: OS command injection in smart_user via username in get-user-info
HIGH 8.4EPSS 0.7%
Token Optimizer MCP measures token savings per AI coding agent, optimizes context, and shares a live local knowledge graph across 16 CLI clients. Prior to version 5.1.0, token-optimizer-mcp is vulnerable to OS command injection in the smart_user tool. Any MCP client that can call the smart_user tool can execute arbitrary shell commands through the username argument of the get-user-info operation. The commands execute with the privileges of the user running the token-optimizer-mcp server. This issue has been patched in version 5.1.0.
- Affected
- ooples · token-optimizer-mcp
- CVSS v3.1 GITHUB
- 8.4 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 0.70% chance of exploitation in the next 30 days, 52nd percentile
- Published
- 2026-09-28
- Updated
- 2026-10-01