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PatchSiren cyber security CVE debrief

CVE-2026-40750 themagnifico52 CVE debrief

A critical vulnerability was discovered in the Kids Online Store theme, affecting versions from n/a through 0.8.9. This vulnerability, classified as CWE-434, allows for the unrestricted upload of files with dangerous types, potentially enabling attackers to upload a web shell to a web server. The vulnerability has a CVSS score of 9.9 and is considered critical.

Vendor
themagnifico52
Product
Kids Online Store
CVSS
CRITICAL 9.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-16
Original CVE updated
2026-06-16
Advisory published
2026-06-16
Advisory updated
2026-06-16

Who should care

Administrators and users of the Kids Online Store theme, particularly those using versions from n/a through 0.8.9, should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability is caused by an unrestricted upload of files with dangerous types in the Kids Online Store theme. This could allow an attacker to upload a web shell to a web server, potentially leading to arbitrary code execution.

Defensive priority

High

Recommended defensive actions

  • Update the Kids Online Store theme to a version that is not vulnerable.
  • Restrict file uploads to only allow specific, safe file types.
  • Implement additional security measures, such as web application firewalls and intrusion detection systems, to detect and prevent potential attacks.

Evidence notes

The vulnerability was reported by [email protected] and has been documented in the CVE record and NVD detail pages.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-40750 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-40750

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

  • CVE-2026-40750 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-40750

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

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.