Description
Zulip is an open-source team collaboration tool with topic-based threading that combines email and chat. Users who used to be subscribed to a private stream and have been removed from it since retain the ability to edit messages/topics, move messages to other streams, and delete messages that they used to have access to, if other relevant organization permissions allow these actions. For example, a user may be able to edit or delete their old messages they posted in such a private stream. An administrator will be able to delete old messages (that they had access to) from the private stream. This issue was fixed in Zulip Server version 7.3.
References (2)
Core 2
Core References
Third Party Advisory x_refsource_confirm
https://github.com/zulip/zulip/security/advisories/GHSA-q3wg-jm9p-35fj
Release Notes x_refsource_misc
https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-7-3
Scores
CVSS v3
6.5
EPSS
0.0040
EPSS Percentile
31.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-285
Status
published
Products (1)
zulip/zulip_server
< 7.3
Published
Aug 25, 2023
Tracked Since
Feb 18, 2026