CVE-2026-73537
Received Received - Intake

Cross-Site Scripting in Miraikan Assist App

Publication date: 2026-08-21

Last updated on: 2026-08-21

Assigner: JPCERT/CC

Description
Cross-site scripting vulnerability exists in Miraikan Assist App. If this vulnerability is exploited, an arbitrary script may be executed in the browser component (WebView) running on the affected product, resulting in the displayed content being altered.

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Meta Information

Published
2026-08-21
Last Modified
2026-08-21
Generated
2026-08-21
AI Q&A
2026-08-21
EPSS Evaluated
N/A
NVD
CVE-2026-73537
EUVD
EUVD-2026-63826

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
japan_science_and_technology_agency miraikan_assist_app to 1.1.7 (exc)
japan_science_and_technology_agency miraikan_assist_app to 1.0.7 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is a cross-site scripting (XSS) vulnerability in the Miraikan Assist App. It allows arbitrary scripts to execute within the app's WebView component, which could alter the content displayed to users.

Detection Guidance

To detect this vulnerability, check the installed version of the Miraikan Assist App on your device. Compare it against the patched versions: Android 1.1.7 or later and iOS 1.0.7 or later. If your version is older, the app is vulnerable.

Impact Analysis

Exploitation could lead to altered displayed content in the app, potentially misleading users or exposing them to malicious actions through script execution.

Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by allowing unauthorized script execution in the app's WebView component, which may lead to data alteration or exposure. However, the provided context does not specify direct compliance implications or affected systems handling regulated data.

Mitigation Strategies

Update the Miraikan Assist App to the latest version. For Android, update to version 1.1.7 or later. For iOS, update to version 1.0.7 or later.

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