CVE-2026-7066Public exploitNetwork attack vector

Unauthenticated command execution via prefix-only shell validation

Published Apr 26, 2026 · Updated Apr 26, 2026

OS command injection in choieastsea simple-openstack-mcp at commit 767b2f4 allows remote attackers to execute commands through its MCP tool. exec_openstack checks only that input starts with openstack, then OpenStackCommander.execute passes the entire string to subprocess.run with shell=True, allowing appended shell metacharacters to escape the intended CLI. Access to the MCP tool is required; successful exploitation runs shell commands as the service account, enabling local file reads or writes and service interruption.

CVSS severity7.3
High
EPSS probability1.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in choieastsea simple-openstack-mcp at commit 767b2f4 allows remote attackers to execute commands through its MCP tool. exec_openstack checks only that input starts with openstack, then OpenStackCommander.execute passes the entire string to subprocess.run with shell=True, allowing appended shell metacharacters to escape the intended CLI. Access to the MCP tool is required; successful exploitation runs shell commands as the service account, enabling local file reads or writes and service interruption.

The record

CVE
CVE-2026-7066
Published
Apr 26, 2026
Updated
Apr 26, 2026
Vendor
choieastsea
Product
simple-openstack-mcp
Classifications
CWE-78, CWE-77, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=767b2f4a8154cca344344b9725537a58399e6036

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

choieastsea · simple-openstack-mcpversion=767b2f4a8154cca344344b9725537a58399e6036

Published CVSS scores

7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
5.5VulDBCVSS: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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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