CVE-2021-30477

2021-04-1423:45:14

mitre

www.cve.org

4.8 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

22.7%

JSON

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

blog.zulip.com/2021/04/14/zulip-server-3-4/