Code Injection in MCP Calculate Server (CVE-2026-44717)
Summary
Code injection in MCP Calculate Server (CVE-2026-44717). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 0.1.1 or later.
Original description
The description as published by the source.
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.
Source: NIST National Vulnerability Database NVD
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-44717 has been found in MCP Calculate Server.
Successful exploitation can lead to full system takeover. CVSS score: 9.8/10.
What to do: upgrade MCP Calculate Server to 0.1.1 or later.
If unsure, ask your IT team or search "MCP Calculate Server CVE-2026-44717" on the vendor's site.
CVE-2026-44717 (MCP Calculate Server) — CWE-94 / CVSS v3 9.8
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: 0.1.1 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Arbitrary code execution (CWE-94) exists in MCP Calculate Server.
Check the vendor advisory for the affected versions of MCP Calculate Server.
Severity: Critical (CVSS 9.8/10). Successful exploitation can lead to full system takeover.
Update to 0.1.1.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで MCP Calculate Server を使っているサービスとバージョンを洗い出す。
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2Apply patch patch
Upgrade MCP Calculate Server to 0.1.1ステージング環境で 0.1.1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
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3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。