Calibre is an open source and free all-around e-book reading management and format conversion tool developed by Kovid Goyal in India. Calibre version 6.9.0 to 7.14.0 has a security vulnerability due to improper access control. An unauthenticated attacker implements remote code execution.This rule supports to defend the A6: Vulnerabe and Outdated Components of OWASP Top 10 - 2021. Other reference:None