Vulnerability-Lookup

JVNDB-2026-000131

Vulnerability from jvndb - Published: 2026-09-14 05:59 - Updated:2026-09-14 05:59

Severity

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

Summary

"YAMAP -Social Trekking GPS App" vulnerable to improper access control

Details

Android application "YAMAP -Social Trekking GPS App" provided by YAMAP INC. contains the following vulnerability:

Improper Verification of Source of a Communication Channel (CWE-940) - CVE-2026-85125

Koki Sato of BroadBand Security, Inc. reported this vulnerability to IPA. JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

References

Type

URL

	JVN	https://jvn.jp/en/jp/JVN69877538/index.html
	CVE	https://www.cve.org/CVERecord?id=CVE-2026-85125
	No Mapping(CWE-Other)	https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html

Impacted products

Vendor

Product

YAMAP INC.

Android application "YAMAP -Social Trekking GPS App"

Show details on JVN DB website

JSON

To clipboard

{
  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000131.html",
  "dc:date": "2026-09-14T14:59+09:00",
  "dcterms:issued": "2026-09-14T14:59+09:00",
  "dcterms:modified": "2026-09-14T14:59+09:00",
  "description": "Android application \"YAMAP -Social Trekking GPS App\" provided by YAMAP INC. contains the following vulnerability:\u003ca href=\u0027https://cwe.mitre.org/data/definitions/940.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\u003cul\u003e\u003cli\u003eImproper Verification of Source of a Communication Channel (CWE-940) - CVE-2026-85125\u003c/li\u003e\u003c/ul\u003eKoki Sato of BroadBand Security, Inc. reported this vulnerability to IPA.\r\nJPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.",
  "link": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000131.html",
  "sec:cpe": {
    "#text": "cpe:/a:misc:yamap_socia_trekking_gps_app",
    "@product": "Android application \"YAMAP -Social Trekking GPS App\"",
    "@vendor": "YAMAP INC.",
    "@version": "2.2"
  },
  "sec:cvss": {
    "@score": "5.4",
    "@severity": "Medium",
    "@type": "Base",
    "@vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
    "@version": "3.0"
  },
  "sec:identifier": "JVNDB-2026-000131",
  "sec:references": [
    {
      "#text": "https://jvn.jp/en/jp/JVN69877538/index.html",
      "@id": "JVN#69877538",
      "@source": "JVN"
    },
    {
      "#text": "https://www.cve.org/CVERecord?id=CVE-2026-85125",
      "@id": "CVE-2026-85125",
      "@source": "CVE"
    },
    {
      "#text": "https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html",
      "@id": "CWE-Other",
      "@title": "No Mapping(CWE-Other)"
    }
  ],
  "title": "\"YAMAP -Social Trekking GPS App\" vulnerable to improper access control"
}

CVE-2026-85125 (GCVE-0-2026-85125)

Vulnerability from cvelistv5 – Published: 2026-09-14 06:46 – Updated: 2026-09-14 19:35

Summary

The Android application "YAMAP -Social Trekking GPS App" contains an improper access control vulnerability in its WebView implementation. The in-app browser may cause information leakage from the app or redirect users to unintended websites.

Severity

5.4 (Medium)


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

5.1 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-14 19:35 UTC

CWE

CWE-940 - Improper Verification of Source of a Communication Channel

Assigner

jpcert jpcert root

References

3 references

URL	Tags
https://info.yamap.com/archives/8173
https://play.google.com/store/apps/details?id=jp.…
https://jvn.jp/en/jp/JVN69877538/

Impacted products

1 product

Vendor	Product	Version
YAMAP INC.	YAMAP -Social Trekking GPS App	Affected: 0 , ≤ 17.1.0 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-85125",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-14T19:35:30.726531Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-14T19:35:41.742Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "YAMAP -Social Trekking GPS App",
          "vendor": "YAMAP INC.",
          "versions": [
            {
              "lessThanOrEqual": "17.1.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Android application \"YAMAP -Social Trekking GPS App\" contains an improper access control vulnerability in its WebView implementation. The in-app browser may cause information leakage from the app or redirect users to unintended websites."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
            "version": "3.0"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV4_0": {
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-940",
              "description": "Improper Verification of Source of a Communication Channel",
              "lang": "en-US",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T06:46:32.519Z",
        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "shortName": "jpcert"
      },
      "references": [
        {
          "url": "https://info.yamap.com/archives/8173"
        },
        {
          "url": "https://play.google.com/store/apps/details?id=jp.co.yamap\u0026hl=en"
        },
        {
          "url": "https://jvn.jp/en/jp/JVN69877538/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
    "assignerShortName": "jpcert",
    "cveId": "CVE-2026-85125",
    "datePublished": "2026-09-14T06:46:32.519Z",
    "dateReserved": "2026-09-03T08:26:09.640Z",
    "dateUpdated": "2026-09-14T19:35:41.742Z",
    "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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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JVNDB-2026-000131

CVE-2026-85125 (GCVE-0-2026-85125)

Tags

Sightings

Nomenclature

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