RCE in Mcp Server For Data Exploration Project
CVE-2025-63603
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.009 (57.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Mcp Server For Data Exploration Project — versions 0.1.6
Weakness classification (CWE)
References
- github.com/reading-plus-ai/mcp-server-data-exploration/issues/12 (Exploit, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2025-63603?
- CVE-2025-63603 is a medium-severity vulnerability in Mcp Server For Data Exploration Project, classified under Command Injection. CVSS score: 6.5/10. Published 2025-11-18.
- How severe is CVE-2025-63603?
- Medium severity. CVSS v3 base score is 6.5 out of 10.