IV. Respect for the Truth

From The Catechism of the Catholic Church

2491
Professional secrets – for example, those of political office holders, soldiers,
physicians, and lawyers – or confidential information given under the seal of
secrecy must be kept, save in exceptional cases where keeping the secret is
bound to cause very grave harm to the one who confided it, to the one who
received it or to a third party, and where the very grave harm can be avoided
only by divulging the truth. Even if not confided under the seal of secrecy,
private information prejudicial to another is not to be divulged without a
grave and proportionate reason.

PART THREE: LIFE IN CHRIST

SECTION TWO THE TEN COMMANDMENTS
- CHAPTER TWO YOU SHALL LOVE YOUR NEIGHBOR AS YOURSELF
  - Article 8 THE EIGHTH COMMANDMENT
    - IV. Respect for the Truth

From The Catechism of the Catholic Church – rosary.team