CVE-2024-39274 HIGH

CVE-2024-39274: Malicious remote can add users to arbitrary teams and channels

Vendor Mattermost
Product Mattermost
Weakness CWE-284
Published August 1, 2024
Last update August 2, 2024
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

August 1, 2024 CVE published
August 2, 2024 Record updated