CVE-2023-48732 — Sensitive Information Exposure in Mattermost Mattermost-server

CWE-200 — Sensitive Information Exposure5 documents4 sources
Severity
4.3MEDIUMNVD
EPSS
0.6%
top 30.92%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Github.com Mattermost Mattermost-serverGithub.com Mattermost Mattermost-server V6Github.com Mattermost Mattermost Server V8+2 more
Timeline
PublishedJan 2
Latest updateJun 28

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NExploitability: 2.8 | Impact: 1.4

Affected Packages5 packages

▶CVEListV5mattermost/mattermost8.1.6

🔴Vulnerability Details

4
OSV
Mattermost notified all users in the channel when using WebSockets to respond individually in github.com/mattermost/mattermost-server↗2024-06-28
▶
CVEList
Keywords that trigger mentions are leaked to other users↗2024-01-02
▶
GHSA
Mattermost notified all users in the channel when using WebSockets to respond individually↗2024-01-02
▶
OSV
Mattermost notified all users in the channel when using WebSockets to respond individually↗2024-01-02
▶
CVE-2023-48732 — Sensitive Information Exposure | cvebase