Use of Hard-coded Credentials in the human resources component in Roskus Prospero Flow CRM before 5.15.9 allows unauthenticated remote attackers to authenticate as any employee onboarded through the standard flow, knowing only their email address, because the employee save controller falls back to the literal password "changeme" and the onboarding form provides no password field.
Reset the password of every employee onboarded through the affected flow.
Upgrade to or use version 5.15.9 or higher, and then reset the password of every employee onboarded through the affected flow.