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PatchSiren cyber security CVE debrief

CVE-2026-21719 CubeCart Limited CVE debrief

An OS command injection vulnerability exists in CubeCart prior to 6.6.0, which may allow a user with an administrative privilege to execute an arbitrary OS command. This vulnerability can have significant operational impacts, particularly for defenders responsible for CubeCart installations. It is crucial to assess potential exposure and prioritize verification and mitigation efforts, focusing on administrative privilege holders. The vulnerability's severity and potential impact necessitate prompt attention and action.

Vendor
CubeCart Limited
Product
CubeCart
CVSS
HIGH 8.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-17
Original CVE updated
2026-10-26
Advisory published
2026-04-17
Advisory updated
2026-10-26

Who should care

Defenders responsible for CubeCart installations, particularly those with administrative privilege holders, should assess potential exposure and prioritize verification and mitigation.

Why it matters

Defenders should prioritize verifying exposure and assessing potential impact of the OS command injection vulnerability in CubeCart prior to 6.6.0, focusing on administrative privilege holders.

  • Potential OS command injection requires verification of exposure and impact
  • Administrative privilege holders are at risk of exploitation
  • Verification of CubeCart version and updates is necessary

Technical summary

The vulnerability exists in CubeCart prior to 6.6.0 and allows a user with administrative privilege to execute an arbitrary OS command. This can be achieved through the exploitation of a weakness in the application's handling of OS commands, which can be leveraged by an attacker with administrative privileges. The technical details of the vulnerability are sourced from the CVE and NVD records, as well as release notes and a third-party advisory.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential impact, focusing on administrative privilege holders.

Recommended defensive actions

  • Verify CubeCart version and check for updates to 6.6.0 or later
  • Assess administrative privilege holders and their potential exposure
  • Monitor for potential OS command injection attempts

Evidence notes

The vulnerability is described in the CVE and NVD records, with additional information from release notes and a third-party advisory. The CVE record was published on 2026-04-17T06:16:29.430Z and has not been modified since then. Defenders should verify the CubeCart version and check for updates to 6.6.0 or later. The vulnerability's existence and potential impact are grounded in source-provided information, but further verification is necessary to determine the extent of exposure.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-21719 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-21719

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-21719 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-21719

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.