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CVE-2021-30477

nvd nist
Published: Apr 15, 2021Modified: Jun 17, 2026

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4.3
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Exploitability: 2.8 / Impact: 1.4
Source: NVD

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.

Affected (1)

Products: Zulip: Zulip Server
Zulip
1 product
Zulip Server
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Zulip Server
Before 3.4

References (2)

Source: cve@mitre.org
Release NotesVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Release NotesVendor Advisory

Timeline

No history available yet.