CVE-2024-39837

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...

CVE-2024-39837

Mattermost Server (Mattermost) is affected by CVE-2024-39837. The issue is in channel creation restriction when shared channels are enabled, allowing a remote attacker to create arbitrary channels. This affects Mattermost versions 9.9.x <= 9.9.0 and 9.5.x

CVE-2024-39837 Malicious remote can create arbitrary channels

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...

CVE-2024-39777

Mattermost contains a vulnerability (CVE-2024-39777) where, when shared channels are enabled, unsolicited invites can expose access to local channels. A remote attacker can send an invite containing the ID of an existing local channel, causing that local channel to become shared without the local...

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...

CVE-2024-39777 Malicious remote can invite itself to an arbitrary local channel

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...

CVE-2024-39777 Malicious remote can invite itself to an arbitrary local channel

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...

CVE-2024-39777 Malicious remote can invite itself to an arbitrary local channel

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...

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

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...

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

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...

CVE-2024-36492 Existing local user overwritten by malicious remote

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...

CVE-2024-36492 Existing local user overwritten by malicious remote

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...

CVE-2024-29977 Malicious remote can create arbitrary reactions on arbitrary posts

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-2024-29977

Mattermost Server vulnerability CVE-2024-29977 affects versions 9.9.x ≤ 9.9.0 and 9.5.x ≤ 9.5.6. The issue is improper validation of synced reactions when shared channels are enabled, enabling a remote attacker to create arbitrary reactions on arbitrary posts. Connected documents confirm the affe...

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...

CVE-2024-29977 Malicious remote can create arbitrary reactions on arbitrary posts

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...

Mattermost security vulnerabilities

Mattermost is an open source collaboration platform from Mattermost, Inc. in the United States. A security vulnerability exists in Mattermost that stems from a failure to properly restrict channel creation when shared channels are enabled, which allows a malicious remote person to create arbitrar...

PT-2024-28694 · Mattermost · Mattermost

Name of the Vulnerable Software and Affected Versions: Mattermost versions 9.5.x through 9.5.6 Mattermost versions 9.7.x through 9.7.5 Mattermost versions 9.8.x through 9.8.1 Mattermost versions 9.9.x through 9.9.0 Description: The issue allows a user on a remote server to set their remote userna...

CVE-2024-39839: Improper Access Control

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...

Mattermost security vulnerabilities

Mattermost is an open source collaboration platform from Mattermost, Inc. in the United States. A security vulnerability exists in Mattermost that stems from a failure to properly validate synchronized posts when shared channels are enabled, which allows a malicious remote user to...