CVE-2026-90619
Received Received - Intake

OS Command Injection in HexStrike AI

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: VulDB

Description
A vulnerability has been found in 0x4m4 HexStrike AI up to d689933ff579d839c676c82b231f8e98326c5f04. Impacted is an unknown function of the file hexstrike_server.py of the component Execute Endpoint. The manipulation of the argument code/script leads to os command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.

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Meta Information

Published
2026-09-14
Last Modified
2026-09-14
Generated
2026-09-14
AI Q&A
2026-09-14
EPSS Evaluated
N/A
NVD
CVE-2026-90619
EUVD
EUVD-2026-77178

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
0x4m4 hexstrike_ai to d689933ff579d839c676c82b231f8e98326c5f04 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-78 The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
CWE-77 The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

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Executive Summary

This vulnerability is an OS command injection flaw in HexStrike AI's execute endpoint. The server accepts a POST request with a code or script parameter in JSON format, writes it to a temporary file, and executes it using the system Python interpreter without authentication, sandboxing, or input validation. This allows remote attackers to run arbitrary system commands with the server's privileges.

Detection Guidance

Check if the `/api/python/execute` endpoint exists in your HexStrike AI deployment by inspecting network traffic or server logs for POST requests to this path. Look for unusual Python code execution attempts or system command invocations in logs from hexstrike_server.py.

Impact Analysis

An attacker could exploit this to execute system commands, steal sensitive files, or establish a reverse shell on the server. Since no authentication is required, any network client can abuse this endpoint to gain full control over the server, potentially leading to data breaches or further network compromise.

Compliance Impact

This vulnerability likely violates compliance requirements for GDPR and HIPAA due to unauthorized code execution and potential data exfiltration. GDPR mandates strict access controls and data protection, while HIPAA requires safeguards against unauthorized system access. Exploitation could lead to unauthorized data access, breaching these regulations.

Mitigation Strategies

Disable the `/api/python/execute` endpoint immediately if it is not required. If the endpoint must remain, implement strong authentication, input validation, and sandboxed execution to prevent arbitrary code execution. Monitor for any signs of exploitation.

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