EUVD-2026-22945
GHSA-cw73-5f7h-m4gv
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
6DescriptionCVE.org
Upsonic 0.71.6 contains a remote code execution vulnerability in its MCP server/task creation functionality. The application allows users to define MCP tasks with arbitrary command and args values. Although an allowlist exists, certain allowed commands (npm, npx) accept argument flags that enable execution of arbitrary OS commands. Maliciously crafted MCP tasks may lead to remote code execution with the privileges of the Upsonic process. In version 0.72.0 Upsonic added a warning about using Stdio servers being able to execute commands directly on the machine.
AnalysisAI
Remote code execution in Upsonic 0.71.6 allows unauthenticated attackers to execute arbitrary OS commands via crafted MCP tasks. Although an allowlist restricts commands, the permitted npm and npx commands accept flags that enable OS command injection. The vulnerability is automatable with total technical impact, but no exploitation has been observed and the EPSS score is very low (0.04%).
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Same weakness CWE-77 – Command Injection
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External POC / Exploit Code
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