EspoCRM before 10.0.5 contains an insecure direct object reference vulnerability in PersonalAccountService that allows users with Email Account scope access to retrieve other users IMAP passwords. Attackers who know a victims Email Account record ID can request that record to steal stored IMAP credentials and access the victims mailbox.
The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.