CVE-2026-30616

High

Published: 15 April 2026

Published

15 April 2026

Modified

27 April 2026

KEV Added

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Patch

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CVSS Score 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS Score 0.0019 39.8th percentile

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-30616 is a high-severity Command Injection (CWE-77) vulnerability in Ox (inferred from references). Its CVSS base score is 7.3 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 39.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

This vulnerability is AI-related — categorised as AI Agent Protocols and Integrations; in the Protocol-Specific Risks risk domain.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 1 other technique. What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match

prevent

Directly mitigates command injection (CWE-77) by validating crafted network inputs to the Jaaz application's MCP STDIO command execution handling before processing.

SI-2 Flaw Remediation good match

prevent

Ensures timely identification, reporting, and remediation of the specific RCE flaw in Jaaz 1.0.30, preventing exploitation via patching or upgrades.

SC-7 Boundary Protection partial match

preventdetect

Monitors and controls network communications at boundaries to the Jaaz application, blocking or detecting crafted requests targeting the STDIO vulnerability.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1059 Command and Scripting Interpreter Execution

Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.

attack.mitre.org →

Why these techniques?

RCE via command injection on network-accessible app directly enables T1190 (Exploit Public-Facing Application) for initial access and T1059 (Command and Scripting Interpreter) for arbitrary command execution.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

Jaaz 1.0.30 contains a remote code execution vulnerability in its MCP STDIO command execution handling. A remote attacker can send crafted network requests to the network-accessible Jaaz application, causing attacker-controlled commands to be executed on the server. Successful exploitation results…

in arbitrary command execution within the context of the Jaaz service, potentially allowing full compromise of the affected system.

Deeper analysisAI

CVE-2026-30616 is a remote code execution vulnerability in Jaaz version 1.0.30, published on 2026-04-15. The issue stems from improper handling of MCP STDIO command execution, classified under CWE-77 (Command Injection) with a CVSS v3.1 base score of 7.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L). It affects the network-accessible Jaaz application, where crafted network requests can trigger execution of attacker-controlled commands on the server.

A remote attacker requires only network access to the Jaaz application and can exploit the vulnerability without privileges, authentication, or user interaction due to its low attack complexity. Exploitation leads to arbitrary command execution in the context of the Jaaz service, with potential for full system compromise given the low impacts across confidentiality, integrity, and availability.

The primary advisory is available from OX Security at https://www.ox.security/blog/mcp-supply-chain-advisory-rce-vulnerabilities-across-the-ai-ecosystem/, which covers this vulnerability alongside other RCE issues in the MCP supply chain within the AI ecosystem.