CVE-2026-73537 PUBLISHED

Assigner: jpcert
Reserved: 18.08.2026 Published: 21.08.2026 Updated: 21.08.2026

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.

CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
CVSS Score: 4.7

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	Low
User Interaction	Required	Availability Impact	None

CVSS 3.0

CVSS 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
CVSS Score: 5.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	Low
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	None
User Interaction	Active

CVSS 4.0

Product Status

Vendor	Japan Science and Technology Agency (JST)
Product	Miraikan Assist App Android version
Versions	Default: unaffected affected from 0 to 1.1.7 (excl.)

Vendor	Japan Science and Technology Agency (JST)
Product	Miraikan Assist App iOS version
Versions	Default: unaffected affected from 0 to 1.0.7 (excl.)

CVE-2026-73537 PUBLISHED

Metrics

Product Status

References

Problem Types