CVE-2026-55157
CVE-2026-55157 · Token Optimizer MCP: OS command injection in smart_user via username in get-user-info
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 8.4 · High · EPSS 0.9% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
token-optimizer-mcp
- Versions
- < 5.1.0: Affected
No fix published
@ooples/token-optimizer-mcp npm
- Affected ranges
- SEMVER: < 5.1.0
Update to 5.1.0