0x4m4 HexStrike AI up to d689933ff579d839c676c82b231f8e98326c5f04 API Tools Endpoint hexstrike_server.py subprocess.Popen os command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.6$0-$5k1.28

Summaryinfo

A vulnerability identified as critical has been detected in 0x4m4 HexStrike AI up to d689933ff579d839c676c82b231f8e98326c5f04. The impacted element is the function subprocess.Popen of the file hexstrike_server.py of the component API Tools Endpoint. The manipulation of the argument additional_args/target/username/password/scan_type/payload leads to os command injection. This vulnerability is listed as CVE-2026-90690. The attack may be initiated remotely. In addition, an exploit is available. This product uses a rolling release model to deliver continuous updates. As a result, specific version information for affected or updated releases is not available. A fix appears to be in progress.

Detailsinfo

A vulnerability was found in 0x4m4 HexStrike AI up to d689933ff579d839c676c82b231f8e98326c5f04 and classified as critical. This issue affects the function subprocess.Popen of the file hexstrike_server.py of the component API Tools Endpoint. The manipulation of the argument additional_args/target/username/password/scan_type/payload with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-90690. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

The exploit is available at github.com. It is declared as proof-of-concept. A fix appears to be in progress.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/13/2026 Advisory disclosed
09/13/2026 +0 days VulDB entry created
09/13/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: 224
Status: Not defined
Confirmation: 🔒

CVE: CVE-2026-90690 (🔒)
GCVE (CVE): GCVE-0-2026-90690
GCVE (VulDB): GCVE-100-403223
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/13/2026 07:13
Changes: 09/13/2026 07:13 (62)
Complete: 🔍
Submitter: ez-lbz
Cache ID: 216::103

Submitinfo

Accepted

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