CVE-2024-9155 Insufficient Authorization On Unlinked Channel Files

Mattermost versions 9.10.x = 9.10.1, 9.9.x = 9.9.2, 9.5.x = 9.5.8 fail to limit access to channels files that have not been linked to a post which allows an attacker to view them in channels that they are a member of...

CVE-2024-47003 DoS via non-string message using permalink embed

Mattermost versions 9.11.x = 9.11.0 and 9.5.x = 9.5.8 fail to validate that the message of the permalink post is a string, which allows an attacker to send a non-string value as the message of a permalink post and crash the frontend...

CVE-2024-47145

Mattermost Server 9.5.x

BIT-MATTERMOST-2024-41144

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 properly validate synced posts, when shared channels are enabled, which allows a malicious remote to create/update/delete arbitrary posts in arbitrary channels...

BIT-MATTERMOST-2024-41926

Mattermost versions 9.9.x = 9.9.0 and 9.5.x = 9.5.6 fail to validate the source of sync messages and only allow the correct remote IDs, which allows a malicious remote to set arbitrary RemoteId values for synced users and therefore claim that a user was synced from another remote...

Mattermost Cross-Site Request Forgery vulnerability

Mattermost versions 9.9.x = 9.9.1, 9.5.x = 9.5.7, 9.10.x = 9.10.0, 9.8.x = 9.8.2 fail to sanitize user inputs in the frontend that are used for redirection which allows for a one-click client-side path traversal that is leading to CSRF in User Management page of the system console...

GHSA-5263-PM2H-M7HW Mattermost doesn't restrict which roles can promote a user as system admin

Mattermost versions 9.9.x = 9.9.1, 9.5.x = 9.5.7, 9.10.x = 9.10.0 and 9.8.x = 9.8.2 fail to restrict which roles can promote a user as system admin which allows a System Role with edit access to the permissions section of system console to update their role e.g. member to include the managesystem...

Mattermost doesn't restrict which roles can promote a user as system admin

Mattermost versions 9.9.x = 9.9.1, 9.5.x = 9.5.7, 9.10.x = 9.10.0 and 9.8.x = 9.8.2 fail to restrict which roles can promote a user as system admin which allows a System Role with edit access to the permissions section of system console to update their role e.g. member to include the managesystem...

GHSA-HRF9-RM95-FPF3 Mattermost Cross-Site Request Forgery vulnerability

Mattermost versions 9.9.x = 9.9.1, 9.5.x = 9.5.7, 9.10.x = 9.10.0, 9.8.x = 9.8.2 fail to sanitize user inputs in the frontend that are used for redirection which allows for a one-click client-side path traversal that is leading to CSRF in User Management page of the system console...

CVE-2024-39836

Mattermost versions 9.9.x = 9.9.1, 9.5.x = 9.5.7, 9.10.x = 9.10.0 and 9.8.x = 9.8.2 fail to ensure that remote/synthetic users cannot create sessions or reset passwords, which allows the munged email addresses, created by shared channels, to be used to receive email notifications and to reset...

CVE-2024-8071

CVE-2024-8071 affects Mattermost Server versions 9.9.x ≤ 9.9.1, 9.5.x ≤ 9.5.7, 9.10.x ≤ 9.10.0, and 9.8.x ≤ 9.8.2. The issue is a failure to restrict which roles can promote a user to system admin, allowing a System Role with edit access to the permissions section of the system console to update ...

CVE-2024-8071 System Role with edit access to permissions can elevate themselves to system admin

Mattermost versions 9.9.x = 9.9.1, 9.5.x = 9.5.7, 9.10.x = 9.10.0 and 9.8.x = 9.8.2 fail to restrict which roles can promote a user as system admin which allows a System Role with edit access to the permissions section of system console to update their role e.g. member to include the managesystem...

CVE-2024-39810 Server crash via Elasticsearch certificate file

Mattermost versions 9.5.x = 9.5.7 and 9.10.x = 9.10.0 fail to time limit and size limit the CA path file in the ElasticSearch configuration which allows a System Role with access to the Elasticsearch system console to add any file as a CA path field, such as /dev/zero and, after testing the...

CVE-2024-39836

Mattermost server vulnerable versions: 9.9.x <= 9.9.1, 9.5.x <= 9.5.7, 9.10.x <= 9.10.0, and 9.8.x

PT-2024-29129 · Mattermost · Mattermost

Name of the Vulnerable Software and Affected Versions: Mattermost versions 9.8.x through 9.8.2 Mattermost versions 9.5.x through 9.5.7 Mattermost versions 9.9.x through 9.9.1 Mattermost versions 9.10.x through 9.10.0 Description: The issue is related to a failure to sanitize user inputs in the...

GHSA-9FPW-C9X7-CV3J Mattermost allows remote actor to set arbitrary RemoteId values for synced users

Mattermost versions 9.9.x = 9.9.0 and 9.5.x = 9.5.6 fail to validate the source of sync messages and only allow the correct remote IDs, which allows a malicious remote to set arbitrary RemoteId values for synced users and therefore claim that a user was synced from another remote...

GHSA-JR9X-3X7M-4J75 Mattermost allows a remote actor to make an arbitrary local channel read-only

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 the modification of local channels by a remote, when shared channels are enabled, which allows a malicious remote to make an arbitrary local channel read-only...

Mattermost allows a user on a remote to set their remote username prop to an arbitrary string

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 users to set their own remote username, when shared channels were enabled, which allows a user on a remote to set their remote username prop to an arbitrary string, which would be then synced to the...

GHSA-JQ3G-XQPX-37X3 Mattermost failed to properly validate synced reactions

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...

CVE-2024-41162 Malicious remote can make an arbitrary local channel read-only

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 the modification of local channels by a remote, when shared channels are enabled, which allows a malicious remote to make an arbitrary local channel read-only...