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CVE-2026-90690: OS Command Injection in 0x4m4 HexStrike AI

0
Medium
VulnerabilityCVE-2026-90690cvecve-2026-90690
Published: 09/14/2026 (09/14/2026, 06:30:11 UTC)
Source: CVE Database V5
Vendor/Project: 0x4m4
Product: HexStrike AI

Description

A weakness has been identified in 0x4m4 HexStrike AI up to d689933ff579d839c676c82b231f8e98326c5f04. The affected element is the function subprocess.Popen of the file hexstrike_server.py of the component API Tools Endpoint. Executing a manipulation of the argument additional_args/target/username/password/scan_type/payload can lead to os command injection. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. A fix appears to be in progress.

CVSS v4.0

Score 6.9medium

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vuln. Confidentiality
Low
Vuln. Integrity
Low
Vuln. Availability
Low
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Affected software

0x4m4

HexStrike AI

CPE configurations
cpe:2.3:a:0x4m4:hexstrike_ai:*:*:*:*:*:*:*:*

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 09/14/2026, 07:17:26 UTC

Technical Analysis

This vulnerability exists in the API Tools Endpoint component of 0x4m4 HexStrike AI, specifically in the subprocess.Popen function within hexstrike_server.py. An attacker can remotely exploit this by manipulating the arguments additional_args, target, username, password, scan_type, or payload to inject OS commands. The product lacks versioning, so no specific affected versions are identified. A patch or official fix is not yet available but is in progress. Exploit code has been publicly released, but no known exploitation in the wild has been reported.

Potential Impact

Successful exploitation allows remote attackers to execute arbitrary OS commands on the affected system, potentially leading to system compromise. The vulnerability is remotely exploitable without authentication and requires low attack complexity. The overall impact is rated medium based on the CVSS 4.0 vector.

Mitigation Recommendations

A fix is currently in progress; no official patch is available at this time. Users should monitor vendor advisories for updates and apply the official fix once released. Until then, consider restricting access to the vulnerable API endpoint to trusted networks or users to reduce exposure.

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Technical Details

Data Version
5.2
Assigner Short Name
VulDB
Date Reserved
2026-09-13T05:07:48.304Z
Cvss Version
4.0
State
PUBLISHED

Threat ID: 6aa79c0455bf5e2cf5ac9da5

Added to database: 09/14/2026, 07:02:28 UTC

Last enriched: 09/14/2026, 07:17:26 UTC

Last updated: 09/15/2026, 03:38:36 UTC

Views: 21

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