I have found that when an app is in use and correct information is provided to it from a user, the information doesn't allow a successful login. However, by clearing app cache, the login is successful without restart.
Hence, it looks like it's possible for the data to get into cache, and hence affect the working of application.
My initial thought is that this could be a possible attack vector.
I have searched on google and this site, but could not find much information on Security of App Caches on the Android OS.
I have found the following thus far: https://www.owasp.org/index.php/OWASP_Mobile_Security_Project_-_Android
How does the App Cache of Apps work on android?
What security features (if any) are present on Android, that would mitigate data from getting into the app cache from either local or remote sources? How do the security features work?