CVE-2023-1775
MEDIUMMattermost Server < 7.1.6 - Unauthorized Sensitive Information Exposure via Websocket Event Broadcast
Title source: llmDescription
When running in a High Availability configuration, Mattermost fails to sanitize some of the user_updated and post_deleted events broadcast to all users, leading to disclosure of sensitive information to some of the users with currently connected Websocket clients.
References (1)
Core 1
Core References
Vendor Advisory
https://mattermost.com/security-updates/
Scores
CVSS v3
4.3
EPSS
0.0055
EPSS Percentile
41.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-200
CWE-668
Status
published
Products (5)
mattermost/mattermost-server
3.3.0 - 7.1.6Go
mattermost/mattermost-server
5.0.0 - 7.1.6Go
mattermost/mattermost-server
6.0.0 - 7.1.6Go
mattermost/mattermost_server
7.7.1
mattermost/mattermost_server
< 7.1.6
Published
Mar 31, 2023
Tracked Since
Feb 18, 2026