CVE-2026-21719Network attack vector

Administrator-level OS command execution

Published Apr 17, 2026 · Updated Apr 17, 2026

OS command injection in CubeCart before 6.6.0 allows remote authenticated users with administrative access to execute arbitrary OS commands. The vendor and coordinating authority have not disclosed the affected function or the operation that passes untrusted input to an OS command. Administrative access to the web application is required, and successful exploitation grants command execution with the CubeCart server process's operating-system privileges.

CVSS severity8.6
High
EPSS probability1.20%
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 CubeCart before 6.6.0 allows remote authenticated users with administrative access to execute arbitrary OS commands. The vendor and coordinating authority have not disclosed the affected function or the operation that passes untrusted input to an OS command. Administrative access to the web application is required, and successful exploitation grants command execution with the CubeCart server process's operating-system privileges.

The record

CVE
CVE-2026-21719
Published
Apr 17, 2026
Updated
Apr 17, 2026
Vendor
CubeCart Limited
Product
CubeCart
Classifications
CWE-78, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 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=prior to 6.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

CubeCart Limited · CubeCartversion=prior to 6.6.0

Published CVSS scores

8.6JPCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.2JPCERT/CCCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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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