0x4m4 HexStrike AI API Tools Endpoint hexstrike_server.py subprocess.Popen os command injection (CVE-2026-90690) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90690

0x4m4 HexStrike AI API Tools Endpoint hexstrike_server.py subprocess.Popen os command injection

Answer in brief

CVE-2026-90690 records a Unknown severity vulnerability in 0x4m4 HexStrike AI API Tools Endpoint hexstrike_server.py subprocess.Popen os command injection. The current sources do not mark it as known exploited. The current feed maps 0x4m4/HexStrike AI (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 14, 2026Updated Sep 14, 2026Source checked Sep 14, 2026First seen by HOL Sep 14, 2026Material review Sep 14, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps 0x4m4/HexStrike AI (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
0x4m4/HexStrike AIgeneric	d689933ff579d839c676c82b231f8e98326c5f04	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for 0x4m4/HexStrike AI.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 14, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.