CVE-2026-44717CWE-1427CWE-94

MCP Calculate Server: Prompt Injection to RCE

Critical · published May 15, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
39.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00478 · 39.5th percentile
Weaknesses
CWE-1427 · Improper Neutralization of Input Used for LLM Prompting; CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-05-15T16:58Z
EPSS history
Timeline
  • 15 MAY 16:58Z
    MCP Calculate Server: Prompt Injection to RCE
    cvelistv5