BIT-MATTERMOST-2024-39839

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...

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-2024-41162

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...

GHSA-C6VP-JJGV-38WJ Mattermost allows remote/synthetic users to create sessions, reset passwords

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...

Mattermost doesn't redact remote users' original email addresses

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, when shared channels are enabled, fail to redact remote users' original email addresses stored in user props when email addresses are otherwise configured not to be visible in the local server...

CVE-2024-32939

Mattermost CVE-2024-32939 affects multiple 9.x branches (9.9.x up to 9.9.1; 9.5.x up to 9.5.7; 9.10.x up to 9.10.0; 9.8.x up to 9.8.2) when shared channels are enabled. The issue is that remote users’ original email addresses stored in user props are not redacted even when emails are configured n...

CVE-2024-32939 Email addresses of remote users visible in props regardless of server settings

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, when shared channels are enabled, fail to redact remote users' original email addresses stored in user props when email addresses are otherwise configured not to be visible in the local server."...

CVE-2024-39836 Munged email address used for password resets and notifications

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-2024-39836

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-2024-24990 · 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 arises when shared channels are enabled in Mattermost,...

Improper Access Control

github.com/mattermost/mattermost-server is vulnerable to Improper Access Control. The vulnerability is caused due to a failure to disallow the modification of local channels by a remote, when shared channels are enabled. This allows a malicious remote user to make an arbitrary local channel...

Improper Access Control

github.com/mattermost/mattermost-server is vulnerable to Improper Access Control. The vulnerability is caused due to a failure to disallow users to set their own remote username when shared channels are enabled. This allows a user on a remote to set their remote username prop to an arbitrary...

Improper Access Control

github.com/mattermost/mattermost-server is vulnerable to Improper Access Control. The vulnerability is due to inadequate validation when shared channels are enabled, allowing an attacker to create, update, or delete arbitrary posts in arbitrary channels...

Mattermost Server 9.0.x < 9.9.1 / 9.10.0 / 9.5.x < 9.5.7 (MMSA-2024-00356)

The version of Mattermost Server installed on the remote host is prior to 9.5.7 or 9.9.1 / 9.10.0. It is, therefore, affected by a vulnerability as referenced in the MMSA-2024-00356 advisory. - Mattermost versions 9.9.x = 9.9.0, 9.5.x = 9.5.6 fail to properly validate synced reactions, when share...

Improper Access Control

github.com/mattermost/mattermost-server is vulnerable to Improper Access Control. The vulnerability is caused due to a failure to properly validate that the channel that comes from the sync message is a shared channel, when shared channels are enabled. This allows a malicious remote user to add...

Improper Access Control

github.com/mattermost/mattermost-server is vulnerable to Improper Access Control. The vulnerability is due to the failure to disallow unsolicited invites when shared channels are enabled, This allowing an attacker to send an invite with the ID of an existing local channel, causing that local...

GO-2024-3025 Mattermost failed to disallow the modification of local users when syncing users in shared channels in github.com/mattermost/mattermost-server

Mattermost failed to disallow the modification of local users when syncing users in shared channels in github.com/mattermost/mattermost-server...

GO-2024-3028 Mattermost failed to properly validate that the channel that comes from the sync message is a shared channel in github.com/mattermost/mattermost-server

Mattermost failed to properly validate that the channel that comes from the sync message is a shared channel in github.com/mattermost/mattermost-server...

GHSA-VG67-CHM7-8M3J Mattermost allows remote actor to create/update/delete posts in arbitrary channels

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...

GHSA-VVPG-55P7-5H8W Mattermost did not properly restrict channel creation

Mattermost versions 9.9.x = 9.9.0, 9.5.x = 9.5.6 fail to properly restrict channel creation which allows a malicious remote to create arbitrary channels, when shared channels were enabled...