dino -- Insufficient message sender validation in Dino

Dino team reports:

Dino before 0.2.3, 0.3.x before 0.3.2, and 0.4.x before 0.4.2 allows
attackers to modify the personal bookmark store via a crafted
message. The attacker can change the display of group chats or
force a victim to join a group chat; the victim may then be tricked
into disclosing sensitive information.