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Mattermost notified all users in the channel when using WebSockets to respond individually

Moderate severity GitHub Reviewed Published Jan 2, 2024 to the GitHub Advisory Database • Updated Jan 3, 2024

Package

gomod github.com/mattermost/mattermost-server/v6 (Go)

Affected versions

<= 8.1.6

Patched versions

8.1.7
gomod github.com/mattermost/mattermost/server/v8 (Go)
<= 8.1.6
8.1.7

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.

References

Published by the National Vulnerability Database Jan 2, 2024
Published to the GitHub Advisory Database Jan 2, 2024
Reviewed Jan 3, 2024
Last updated Jan 3, 2024

Severity

Moderate
4.3
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weaknesses

CVE ID

CVE-2023-48732

GHSA ID

GHSA-q7rx-w656-fwmv

Source code

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