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    4 vulnerabilities found for token-optimizer-mcp by ooples

    CVE-2026-55157 (GCVE-0-2026-55157)

    Vulnerability from nvd – Published: 2026-09-28 17:48 – Updated: 2026-10-01 14:47
    VLAI
    Title
    Token Optimizer MCP: OS command injection in smart_user via username in get-user-info
    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.
    Severity
    8.4 (High)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-10-01 14:47 UTC
    CWE
    • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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    CVE-2026-55156 (GCVE-0-2026-55156)

    Vulnerability from nvd – Published: 2026-09-28 17:48 – Updated: 2026-09-28 18:11
    VLAI
    Title
    Token Optimizer MCP: Unauthenticated Path Traversal in Dashboard Session Log API Endpoints
    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, the dashboard HTTP server in token-optimizer-mcp exposes /api/session-summary and /api/session-events with no authentication middleware — any network-accessible client can reach them without credentials. Both handlers concatenate the caller-supplied sessionId query parameter directly into a filesystem path via path.join, and Node.js normalizes .. segments at resolution time, allowing an unauthenticated attacker to read any .jsonl file reachable from the server's filesystem. This issue has been patched in version 5.1.0.
    Severity
    5.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-28 18:10 UTC
    CWE
    • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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    CVE-2026-55156 (GCVE-0-2026-55156)

    Vulnerability from cvelistv5 – Published: 2026-09-28 17:48 – Updated: 2026-09-28 18:11
    VLAI
    Title
    Token Optimizer MCP: Unauthenticated Path Traversal in Dashboard Session Log API Endpoints
    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, the dashboard HTTP server in token-optimizer-mcp exposes /api/session-summary and /api/session-events with no authentication middleware — any network-accessible client can reach them without credentials. Both handlers concatenate the caller-supplied sessionId query parameter directly into a filesystem path via path.join, and Node.js normalizes .. segments at resolution time, allowing an unauthenticated attacker to read any .jsonl file reachable from the server's filesystem. This issue has been patched in version 5.1.0.
    Severity
    5.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-28 18:10 UTC
    CWE
    • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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    CVE-2026-55157 (GCVE-0-2026-55157)

    Vulnerability from cvelistv5 – Published: 2026-09-28 17:48 – Updated: 2026-10-01 14:47
    VLAI
    Title
    Token Optimizer MCP: OS command injection in smart_user via username in get-user-info
    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.
    Severity
    8.4 (High)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-10-01 14:47 UTC
    CWE
    • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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          "name": "https://github.com/ooples/token-optimizer-mcp/releases/tag/v5.1.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ooples/token-optimizer-mcp/releases/tag/v5.1.0"
        }
      ],
      "source": {
        "advisory": "GHSA-49mq-fc6q-3h46",
        "discovery": "UNKNOWN"
      },
      "title": "Token Optimizer MCP: OS command injection in smart_user via username in get-user-info"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-55157",
    "datePublished": "2026-09-28T17:48:16.422Z",
    "dateReserved": "2026-06-16T15:13:28.165Z",
    "dateUpdated": "2026-10-01T14:47:57.868Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}