CVE-2026-55157
8.4
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| ooples | token-optimizer-mcp | < 5.1.0 | affected |
Weaknesses
- CWE-78: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
- https://github.com/ooples/token-optimizer-mcp/security/advisories/GHSA-49mq-fc6q-3h46
- https://github.com/ooples/token-optimizer-mcp/commit/b4ee96dac799cbfba0a9f9c17844ce9d613cbcc7
- https://github.com/ooples/token-optimizer-mcp/releases/tag/v5.1.0
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