CVE-2026-44717

MCP Calculate Server: Prompt Injection to RCE

State: Published
Severity: 9.8 Critical
Published: May 15, 2026
Updated: May 15, 2026
Reserved: May 7, 2026

Description

MCP Calculate Server is a mathematical calculation service based on MCP protocol and SymPy library. Prior to 0.1.1, the use of eval() to evaluate mathematical expressions without proper input sanitization leads to remote code execution. This vulnerability is fixed in 0.1.1.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-94 Improper Control of Generation of Code ('Code Injection')
CWE-1427

Affected Products

Product	Versions
mcp_calculate_server611711Dark	< 0.1.1Affected

References

https://github.com/611711Dark/mcp_calculate_server/security/advisories/GHSA-2mgq-7rfg-rwpj

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