2021-04-15 02:15:00 2021-04-20 02:13:00

An issue was discovered in Zulip Server before 3.4. A bug in the implementation of replies to messages sent by outgoing webhooks to private streams meant that an outgoing webhook bot could be used to send messages to private streams that the user was not intended to be able to send messages to.

Vector

NETWORK

Complexity

LOW

Authentication

SINGLE

Confidentiality

NONE

Integrity

PARTIAL

Availability

NONE