CVE-2025-63603: A command injection vulnerability exists in the MCP Data Science Server's (reading-plus-ai/mcp-server-data-exp

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MEDIUM 6.5REMOTEDOWNGRADE

CVE-2025-63603 is a medium-severity flaw (CVSS 6.5) affecting mcp server for data exploration. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 42%)
CISA exploited list	No
Weakness	CWE-77
Published	2025-11-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mcp server for data exploration project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-18 16:15 UTCPublished CVE record published
2026-06-17 09:53 UTCUpdated Record last modified

mcp server for data exploration project mcp server for data exploration DOWNGRADE

Affected: 0.1.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.1.6

1. Check installed version

apt-cache policy mcp-server-for-data-exploration || rpm -q mcp-server-for-data-exploration || mcp-server-for-data-exploration --version

2. No fixed release: DOWNGRADE to a release before 0.1.6 (Debian / Ubuntu)

apt-cache madison mcp-server-for-data-exploration sudo apt install mcp-server-for-data-exploration=<VERSION_BEFORE_0.1.6> sudo apt-mark hold mcp-server-for-data-exploration

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list mcp-server-for-data-exploration sudo dnf downgrade mcp-server-for-data-exploration-<VERSION_BEFORE_0.1.6> sudo dnf versionlock add mcp-server-for-data-exploration

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-63603?

mcp server for data exploration: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-63603 being exploited?

CVE-2025-63603 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-63603 affect?

CVE-2025-63603 affects mcp server for data exploration. Severity is medium (CVSS 6.5). 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-s

How urgent is CVE-2025-63603?

Priority 47/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Python vulnerabilities

References

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