TaleLin lin-cms-spring-boot book Endpoint BookController.java searchBook improper authorization

A vulnerability was identified in TaleLin lin-cms-spring-boot up to 0.2.1. Affected by this vulnerability is the function searchBook of the file src/main/java/io/github/talelin/latticy/controller/v1/BookController.java of the component book Endpoint. The manipulation leads to improper authorization. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.