Vulnerability Details CVE-2021-20873
Yappli is an application development platform which provides the function to access a requested URL using Custom URL Scheme. When Android apps are developed with Yappli versions since v7.3.6 and prior to v9.30.0, they are vulnerable to improper authorization in Custom URL Scheme handler, and may be directed to unintended sites via a specially crafted URL.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 50.1%
CVSS Severity
CVSS v3 Score 8.1
CVSS v2 Score 5.8
References