CVE-2025-63603

CVE-2025-63603 is a medium-severity vulnerability in Mcp Server For Data Exploration Project Mcp Server For Data Exploration with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.

Key facts

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2025-63603?
CVE-2025-63603 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-63603 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-63603?
CVE-2025-63603 affects Mcp Server For Data Exploration Project Mcp Server For Data Exploration. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-63603?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-63603 have an EU (EUVD) identifier?
Yes. CVE-2025-63603 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198042.
When was CVE-2025-63603 published?
CVE-2025-63603 was published on 2025-11-18 and last updated on 2026-06-17.

References

Affected products (1)

Other CWE-77 (Command Injection) vulnerabilities

Browse all CWE-77 (Command Injection) vulnerabilities →