"Yahoo! JAPAN" App vulnerable to cross-site scripting


"Yahoo! JAPAN" App provided by LY Corporation contains a cross-site scripting vulnerability (CWE-79).

Shiga Takuma 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 5.0 (Medium) [IPA Score]
  • Attack Vector: Local
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Changed
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 4.3 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products

LY Corporation
  • Yahoo! JAPAN App for Android v2.3.1 to v3.161.1
  • Yahoo! JAPAN App for iOS v3.2.2 to v4.109.0


An arbitrary script may be executed on the WebView of "Yahoo! JAPAN" App via other app installed on the user's device.

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

LY Corporation
CWE (What is CWE?)

  1. Cross-site Scripting(CWE-79) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2024-28895

  1. JVN : JVN#23528780
Revision History

  • [2024/03/29]
      Web page was published