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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Active

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00186.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Japan Science and Technology Agency (JST) Miraikan Assist App Android version unaffected
Version Status Constraints
0 affected < 1.1.7
Japan Science and Technology Agency (JST) Miraikan Assist App iOS version unaffected
Version Status Constraints
0 affected < 1.0.7

No data.

No data.

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Vendors Products
Japan Science And Technology Agency (jst) Subscribe
Miraikan Assist App Android Version Subscribe
Miraikan Assist App Ios Version Subscribe

Project Subscriptions

Vendors Products
Japan Science And Technology Agency (jst) Subscribe
Miraikan Assist App Android Version Subscribe
Miraikan Assist App Ios Version Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://jvn.jp/en/jp/JVN09266484/ cve-icon cve-icon
https://www.miraikan.jst.go.jp/en/news/general/202608194709.html cve-icon cve-icon
History

Fri, 21 Aug 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 21 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
First Time appeared Japan Science And Technology Agency (jst)
Japan Science And Technology Agency (jst) miraikan Assist App Android Version
Japan Science And Technology Agency (jst) miraikan Assist App Ios Version
Vendors & Products Japan Science And Technology Agency (jst)
Japan Science And Technology Agency (jst) miraikan Assist App Android Version
Japan Science And Technology Agency (jst) miraikan Assist App Ios Version

Fri, 21 Aug 2026 08:45:00 +0000

Type Values Removed Values Added
Title WebView Cross‑Site Scripting in Miraikan Assist App

Fri, 21 Aug 2026 07:45:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-79
References
Metrics cvssV3_0

{'score': 4.7, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published:

Updated: 2026-08-21T12:44:53.558Z

Reserved: 2026-08-18T01:05:43.517Z

Link: CVE-2026-73537

cve-icon Vulnrichment

Updated: 2026-08-21T12:44:34.855Z

cve-icon NVD

Status : Received

Published: 2026-08-21T08:16:44.003

Modified: 2026-08-21T13:18:18.887

Link: CVE-2026-73537

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-21T12:08:06Z

Weaknesses