CVE-2026-30625

CRITICAL EPSS 57.6%

Published Apr 15, 20262mo ago · Modified Jun 17, 20262w ago

9.8 CVSS 3.1

Critical

Published Apr 15, 2026 2mo ago

Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score

9.8

Exploitability

3.9

Impact

5.9

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality High

Integrity High

Availability High

Threat Intelligence

EPSS Exploit Probability

57.6% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-77 Command Injection Injection

References 2

github.com https://github.com/Upsonic/Upsonic/commit/855053fce0662227d9246268ff4a0844b481a305
ox.security https://www.ox.security/blog/mcp-supply-chain-advisory-rce-vulnerabilities-across-the-ai-ecosystem/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.