CVE-2025-63603 Command injection in n/a
Attackers can execute arbitrary Python code with full system privileges via the run_script tool due to unrestricted builtins in safe_eval.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-63603?
CVE-2025-63603 is a medium-severity command injection vulnerability in n/a, published on 18 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-77
Which versions are affected by CVE-2025-63603?
It affects 1 product.
Products include Mcp Server for Data Exploration Project Mcp Server for Data Exploration.
How do I fix CVE-2025-63603?
No fix has been published for CVE-2025-63603 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2025-63603 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-63603 exists.
Sources
Also known as GHSA-h4jc-wm4j-2vrp.