CVE-2024-39274

Malicious remote can add users to arbitrary teams and channels

State: Published
Severity: 8.7 High
Published: Aug 1, 2024
Updated: Aug 2, 2024
Reserved: Jul 23, 2024

Description

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 and 9.8.x <= 9.8.1 fail to properly validate that the channel that comes from the sync message is a shared channel, when shared channels are enabled, which allows a malicious remote to add users to arbitrary teams and channels

Scores

CVSS	Score	Vector	Source
3.1	8.7 High	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N	Mattermost

Weaknesses

CWE-284 Improper Access Control

Affected Products

Product	Versions
MattermostMattermost	9.9.0Affected 9.5.0 through 9.5.6Affected 9.7.0 through 9.7.5Affected 9.8.0 through 9.8.1Affected 9.10.0Not affected 9.9.1Not affected 9.5.7Not affected 9.7.6Not affected 9.8.2Not affected

References

https://mattermost.com/security-updates

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