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Vulnerability CVE-2021-30477
Published: 2021-04-15
| Description: |
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. |
Type:
CWE-732
CVSS2 => (AV:N/AC:L/Au:S/C:N/I:P/A:N)
| CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
4/10 |
2.9/10 |
8/10 |
| Exploit range |
Attack complexity |
Authentication |
Remote |
Low |
Single time |
| Confidentiality impact |
Integrity impact |
Availability impact |
None |
Partial |
None |
References: |
https://blog.zulip.com/2021/04/14/zulip-server-3-4/
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