CordysCRM through 1.9.3 Authorization Bypass via Follow-Up Record Add Endpoints

CordysCRM through 1.9.3 contains an authorization bypass vulnerability that allows low-privileged authenticated users to skip permission checks by setting the owner field to their own user id. Attackers can send requests to the follow/record/add endpoints to add follow-up records and overwrite follow_time and follower on any known customer, clue or opportunity.