# CVE-2025-63603: CVE-2025-63603

Status: published. Published: 2025-11-18. Updated: 2026-11-07.

A command injection vulnerability exists in the MCP Data Science Server's (reading-plus-ai/mcp-server-data-exploration) 0.1.6 in the safe_eval() function (src/mcp_server_ds/server.py:108). The function uses Python's exec() to execute user-supplied scripts but fails to restrict the __builtins__ dictionary in the globals parameter. When __builtins__ is not explicitly defined, Python automatically provides access to all built-in functions including __import__, exec, eval, and open. This allows an attacker to execute arbitrary Python code with full system privileges, leading to complete system compromise. The vulnerability can be exploited by submitting a malicious script to the run_script tool, requiring no authentication or special privileges.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- mcp_server_for_data_exploration_project / mcp_server_for_data_exploration: 0.1.6 (affected, custom). Source: NVD

## NVD configuration conditions

Affected CPE matches depend on the following AND/OR and negation conditions:

```json
[
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:mcp_server_for_data_exploration_project:mcp_server_for_data_exploration:0.1.6:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  }
]
```

## Severity and prioritization

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N; source: NVD: 134c704f-9b21-4f2e-91b3-4a467353bcc0

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation poc; automatable yes; technical impact total; source NVD SSVC: 134c704f-9b21-4f2e-91b3-4a467353bcc0

- Weaknesses: CWE-77

## Exploit evidence

- exploit: https://github.com/reading-plus-ai/mcp-server-data-exploration/issues/12 (cve@mitre.org)

## References

- https://github.com/reading-plus-ai/mcp-server-data-exploration/issues/12 (cve@mitre.org; Exploit, Issue Tracking, Third Party Advisory)

## Provenance

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-63603; retrieved 2026-11-07; source updated 2026-11-07

Revision: 0dfbfd1fae2d66c1749c45e9b23ff44c4fca3a931f074175930a9a37f9cffeb3

Canonical: https://y2.dev/cve/CVE-2025-63603

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- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.