Medium severity · published Aug 21, 2026
CVE-2026-73537
Cross-site scripting vulnerability exists in Miraikan Assist App
4.7
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Miraikan Assist App Android version · Japan Science and Technology Agency (JST)
before 1.1.7 · source: vendor
MA
Miraikan Assist App iOS version · Japan Science and Technology Agency (JST)
before 1.0.7 · source: vendor
Affected product
MA
Miraikan Assist App Android version
Japan Science and Technology Agency (JST)