CVSS: 8.7EPSS: 0%CPEs: 4EXPL: 0CVE-2024-39777 – Malicious remote can invite itself to an arbitrary local channel
https://notcve.org/view.php?id=CVE-2024-39777
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 disallow unsolicited invites to expose access to local channels, when shared channels are enabled, which allows a malicious remote to send an invite with the ID of an existing local channel, and that local channel will then become shared without the consent of the local admin. • https://mattermost.com/security-updates • CWE-284: Improper Access Control •
CVSS: 8.7EPSS: 0%CPEs: 4EXPL: 0CVE-2024-39274 – Malicious remote can add users to arbitrary teams and channels
https://notcve.org/view.php?id=CVE-2024-39274
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 • https://mattermost.com/security-updates • CWE-284: Improper Access Control •
CVSS: 7.4EPSS: 0%CPEs: 4EXPL: 0CVE-2024-36492 – Existing local user overwritten by malicious remote
https://notcve.org/view.php?id=CVE-2024-36492
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to disallow the modification of local users when syncing users in shared channels. which allows a malicious remote to overwrite an existing local user. • https://mattermost.com/security-updates • CWE-284: Improper Access Control •
CVSS: 2.7EPSS: 0%CPEs: 2EXPL: 0CVE-2024-29977 – Malicious remote can create arbitrary reactions on arbitrary posts
https://notcve.org/view.php?id=CVE-2024-29977
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6 fail to properly validate synced reactions, when shared channels are enabled, which allows a malicious remote to create arbitrary reactions on arbitrary posts • https://mattermost.com/security-updates • CWE-284: Improper Access Control •
CVSS: 6.5EPSS: 0%CPEs: 4EXPL: 0CVE-2024-6428 – Limited DoS due to permitting creating users with user-defined IDs
https://notcve.org/view.php?id=CVE-2024-6428
Mattermost versions 9.8.0, 9.7.x <= 9.7.4, 9.6.x <= 9.6.2, 9.5.x <= 9.5.5 fail to prevent specifying a RemoteId when creating a new user which allows an attacker to specify both a remoteId and the user ID, resulting in creating a user with a user-defined user ID. This can cause some broken functionality in User Management such administrative actions against the user not working. Las versiones de Mattermost 9.8.0, 9.7.x <= 9.7.4, 9.6.x <= 9.6.2, 9.5.x <= 9.5.5 no evitan especificar un RemoteId al crear un nuevo usuario, lo que permite a un atacante especificar ambos. un ID remoto y el ID de usuario, lo que da como resultado la creación de un usuario con un ID de usuario definido por el usuario. Esto puede provocar que alguna funcionalidad rota en la Gestión de usuarios, como por ejemplo acciones administrativas contra el usuario, no funcionen. • https://mattermost.com/security-updates • CWE-284: Improper Access Control •