CVE-2023-48732 MEDIUM

CVE-2023-48732: Keywords that trigger mentions are leaked to other users

Vendor Mattermost
Product Mattermost
Weakness CWE-200 · Info exposure
Published January 2, 2024
Last update June 3, 2025
View on NVD All CVEs

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

What the vulnerability does

01Description

Mattermost fails to scope the WebSocket response around notified users to a each user separately resulting in the WebSocket broadcasting the information about who was notified about a post to everyone else in the channel.

Key dates

02Disclosure timeline

January 2, 2024 CVE published
June 3, 2025 Record updated