[Japanese]

JVNDB-2026-000131

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

Overview

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.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 5.4 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None
CVSS v4 Severity
Base Metrics: 5.1 (Medium) [IPA Score]
  • Access Vector (AV): Network
  • Attack Complexity (AC): Low
  • Attack Requirements (AT): None
  • Privileges Required (PR): None
  • User Interaction (UI): Active
    • Vulnerable System Impact
  • Confidentiality Impact (VC): Low
  • Integrity Impact (VI): Low
  • Availability Impact (VA): None
    • Subsequent System Impact
  • Confidentiality Impact (SC): None
  • Integrity Impact (SI): None
  • Availability Impact (SA): None
Affected Products


YAMAP INC.
  • Android application "YAMAP -Social Trekking GPS App" versions v17.1.0 and earlier

Impact

The in-app browser may cause information leakage from the app or redirect users to unintended websites.
Solution

[Update the Application]
Update the application to the latest version according to the information provided by the developer.
Vendor Information

YAMAP INC.
CWE (What is CWE?)

  1. No Mapping(CWE-Other) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2026-85125
References

  1. JVN : JVN#69877538
Revision History

  • [2026/09/14]
      Web page was published

Date Public2026/09/14
Date First Published2026/09/14
Date Last Updated2026/09/14