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.
References
Link Resource
https://blog.zulip.com/2021/04/14/zulip-server-3-4/ Release Notes Vendor Advisory
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: mitre

Published: 2021-04-14T23:45:14

Updated: 2021-04-14T23:45:14

Reserved: 2021-04-09T00:00:00


Link: CVE-2021-30477

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2021-04-15T00:15:13.047

Modified: 2022-07-12T17:42:04.277


Link: CVE-2021-30477

JSON object: View

cve-icon Redhat Information

No data.