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EUVD-2026-160782

fkie_cve-2024-41918

'Rakuten Ichiba App' for Android 12.4.0 and earlier and 'Rakuten Ichiba App' for iOS 11.7.0 and earlier are vulnerable to improper authorization in handler for custom URL scheme. An arbitrary site may be displayed on the WebView of the product via Intent from another application installed on the user's device. As a result, the user may be redirected to an unauthorized site, and the user may become a victim of a phishing attack.

GHSA-jfp9-mpfm-8qc7

jvndb-2024-000085

"Rakuten Ichiba App" provided by Rakuten Group, Inc. provides the function to access a requested URL using Custom URL Scheme. The App does not restrict access to the function properly (CWE-939) which may be exploited to direct the App to access any sites. Shiga Takuma of BroadBand Security, Inc. reported this vulnerability to IPA. JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.