Article Bcc fields and agent personal information are shown when customer prints the ticket (PDF) via external interface. This issue affects: OTRS AG OTRS 7.0.x version 7.0.23 and prior versions; 8.0.x version 8.0.10 and prior versions.CreditsLászló GyarakiReferenceshttps://otrs.com/release-notes/otrs-security-advisory-2021-02/