Vulnerability-Lookup

JVNDB-2026-000120

Vulnerability from jvndb - Published: 2026-08-21 06:39 - Updated:2026-08-21 06:39

Severity

4.7 (Medium) - cvssV3_0 - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Summary

Miraikan Assist App vulnerable to cross-site scripting

Details

Miraikan Assist App provided by Japan Science and Technology Agency (JST) contains the following vulnerability.

Cross-site scripting (CWE-79) - CVE-2026-73537

RyotaK of GMO Flatt Security Inc. reported this vulnerability to the developer and coordinated. After the coordination was completed, RyotaK reported the case to JPCERT/CC to notify users of the solution through JVN.

References

Type

URL

	JVN	https://jvn.jp/en/jp/JVN09266484/index.html
	CVE	https://www.cve.org/CVERecord?id=CVE-2026-73537
	Cross-site Scripting(CWE-79)	https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html

Impacted products

Vendor

Product

	Japan Science and Technology Agency	Miraikan Assist App Android version
	Japan Science and Technology Agency	Miraikan Assist App iOS version

Show details on JVN DB website

JSON

To clipboard

{
  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000120.html",
  "dc:date": "2026-08-21T15:39+09:00",
  "dcterms:issued": "2026-08-21T15:39+09:00",
  "dcterms:modified": "2026-08-21T15:39+09:00",
  "description": "Miraikan Assist App provided by Japan Science and Technology Agency (JST) contains the following vulnerability.\u003ca href=\u0027https://cwe.mitre.org/data/definitions/79.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\u003cul\u003e\u003cli\u003eCross-site scripting (CWE-79) - CVE-2026-73537\u003c/li\u003e\u003c/ul\u003eRyotaK of GMO Flatt Security Inc. reported this vulnerability to the developer and coordinated. After the coordination was completed, RyotaK reported the case to JPCERT/CC to notify users of the solution through JVN.",
  "link": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000120.html",
  "sec:cpe": [
    {
      "#text": "cpe:/a:misc:jst_miraikan_app_for_android",
      "@product": "Miraikan Assist App Android version",
      "@vendor": "Japan Science and Technology Agency",
      "@version": "2.2"
    },
    {
      "#text": "cpe:/a:misc:jst_miraikan_app_for_ios",
      "@product": "Miraikan Assist App iOS version",
      "@vendor": "Japan Science and Technology Agency",
      "@version": "2.2"
    }
  ],
  "sec:cvss": {
    "@score": "4.7",
    "@severity": "Medium",
    "@type": "Base",
    "@vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N",
    "@version": "3.0"
  },
  "sec:identifier": "JVNDB-2026-000120",
  "sec:references": [
    {
      "#text": "https://jvn.jp/en/jp/JVN09266484/index.html",
      "@id": "JVN#09266484",
      "@source": "JVN"
    },
    {
      "#text": "https://www.cve.org/CVERecord?id=CVE-2026-73537",
      "@id": "CVE-2026-73537",
      "@source": "CVE"
    },
    {
      "#text": "https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html",
      "@id": "CWE-79",
      "@title": "Cross-site Scripting(CWE-79)"
    }
  ],
  "title": "Miraikan Assist App vulnerable to cross-site scripting"
}

CVE-2026-73537 (GCVE-0-2026-73537)

Vulnerability from cvelistv5 – Published: 2026-08-21 07:23 – Updated: 2026-08-21 12:44

Summary

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.

Severity

4.7 (Medium)


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

5.1 (Medium)


                        
                          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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-21 12:43 UTC

CWE

CWE-79 - Cross-site scripting (XSS)

Assigner

jpcert jpcert root

References

2 references

URL	Tags
https://www.miraikan.jst.go.jp/en/news/general/20…
https://jvn.jp/en/jp/JVN09266484/

Impacted products

2 products

Vendor	Product	Version
Japan Science and Technology Agency (JST)	Miraikan Assist App Android version	Affected: 0 , < 1.1.7 (semver)
Japan Science and Technology Agency (JST)	Miraikan Assist App iOS version	Affected: 0 , < 1.0.7 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-73537",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-21T12:43:43.972426Z",
                "version": "2.0.3"
              },
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            }
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          "dateUpdated": "2026-08-21T12:44:53.558Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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      }
    ],
    "cna": {
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          "defaultStatus": "unaffected",
          "product": "Miraikan Assist App Android version",
          "vendor": "Japan Science and Technology Agency (JST)",
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
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          "vendor": "Japan Science and Technology Agency (JST)",
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N",
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          },
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          "scenarios": [
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      "providerMetadata": {
        "dateUpdated": "2026-08-21T07:23:17.939Z",
        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "shortName": "jpcert"
      },
      "references": [
        {
          "url": "https://www.miraikan.jst.go.jp/en/news/general/202608194709.html"
        },
        {
          "url": "https://jvn.jp/en/jp/JVN09266484/"
        }
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  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
    "assignerShortName": "jpcert",
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    "datePublished": "2026-08-21T07:23:17.939Z",
    "dateReserved": "2026-08-18T01:05:43.517Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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JVNDB-2026-000120

CVE-2026-73537 (GCVE-0-2026-73537)

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