An issue was discovered in 1CRM System through 8.6.7. An insecure direct object reference to internally stored files allows a remote attacker to access various sensitive information via an unauthenticated request with a predictable URL.
https://1crm.com/documentation/
http://seclists.org/fulldisclosure/2020/Sep/31
http://packetstormsecurity.com/files/159193/1CRM-8.6.7-Insecure-Direct-Object-Reference.html