Denial Of Service (DoS)

github.com/mattermost/mattermost-server is vulnerable to Denial-of-service DoS vulnerability. The vulnerability is due to improper validation of post types, allowing attackers to exploit a specific post type customplnotification and its props to deny service to users with the sysconsolereadplugin...

GO-2025-3380 Mattermost has Improper Check for Unusual or Exceptional Conditions in github.com/mattermost/mattermost-server

Mattermost has Improper Check for Unusual or Exceptional Conditions in github.com/mattermost/mattermost-server. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports...

Brute-force Attack

github.com/mattermost/mattermost-server is vulnerable to Brute-force Attack. The vulnerability is due to improper synchronization when checking and updating failed login attempts, allowing attackers to bypass the "Max failed attempts" restriction by sending multiple login requests simultaneously...

Mattermost Server 9.5.x < 9.5.13, 9.11.x < 9.11.5, 10.0.x < 10.0.3, 10.1.x < 10.1.3, 10.2.0 (MMSA-2024-00388, MMSA-2024-00392)

The version of Mattermost Server installed on the remote host is prior to 9.5.13, 9.11.5, 10.0.3, 10.1.3 or 10.2.0. It is, therefore, affected by the vulnerabilities as referenced in the MMSA-2024-00388 and MMSA-2024-00392 advisories: - Mattermost fails to prevent concurrently checking and updati...

GO-2024-3338 Mattermost Race Condition vulnerability in github.com/mattermost/mattermost-server

Mattermost Race Condition vulnerability in github.com/mattermost/mattermost-server...

GO-2024-3334 Mattermost Server Resource Exhaustion in github.com/mattermost/mattermost-server

Mattermost Server Resource Exhaustion in github.com/mattermost/mattermost-server...

Mattermost Server 9.5.x < 9.5.12, 9.11.x < 9.11.4, 10.0.x < 10.0.2, 10.1.x < 10.1.2, 10.2.0 (MMSA-2024-00386)

The version of Mattermost Server installed on the remote host is prior to 9.5.12, 9.11.4, 10.0.2, 10.1.2 or 10.2.0. It is, therefore, affected by a vulnerability as referenced in the MMSA-2024-00386 advisory. - Mattermost versions 10.0.x = 10.0.1, 10.1.x = 10.1.1, 9.11.x = 9.11.3, 9.5.x = 9.5.11...

BIT-MATTERMOST-2024-21848

Improper Access Control in Mattermost Server versions 8.1.x before 8.1.11 allows an attacker that is in a channel with an active call to keep participating in the call even if they are removed from the channel...

BIT-MATTERMOST-2024-28053

Resource Exhaustion in Mattermost Server versions 8.1.x before 8.1.10 fails to limit the size of the payload that can be read and parsed allowing an attacker to send a very large email payload and crash the server...

BIT-MATTERMOST-2024-29221

Improper Access Control in Mattermost Server versions 9.5.x before 9.5.2, 9.4.x before 9.4.4, 9.3.x before 9.3.3, 8.1.x before 8.1.11 lacked proper access control in the /api/v4/users/me/teams endpoint allowing a team admin to get the invite ID of their team, thus allowing them to invite users,...

Mattermost Server 9.5.x < 9.5.10, 9.10.x < 9.10.3, 9.11.x < 9.11.2, 10.0.x < 10.0.1, 10.1.0 (MMSA-2024-00381)

The version of Mattermost Server installed on the remote host is prior to 9.5.10, 9.10.3, 9.11.2, 10.0.1 or 10.1.0. It is, therefore, affected by a vulnerability as referenced in the MMSA-2024-00381 advisory. - Mattermost versions 9.10.x = 9.10.2, 9.11.x = 9.11.1, 9.5.x = 9.5.9 and 10.0.x = 10.0....

Information Disclosure

github.com/mattermost/mattermost-server is vulnerable to Information Disclosure. The vulnerability is due to improper querying of Elasticsearch, which allows attackers to obtain the names of private channels they are not members of when Elasticsearch v8 is enabled...

MFA Code Replay Attacks

github.com/mattermost/mattermost-server is vulnerable to MFA code replay attacks. The vulnerability is due to insufficient validation of MFA codes, which allows attackers to reuse the same codes within approximately 30 seconds...

GO-2024-3235 Mattermost server allows authenticated user to delete arbitrary post in github.com/mattermost/mattermost-server

Mattermost server allows authenticated user to delete arbitrary post in github.com/mattermost/mattermost-server...

GO-2024-3232 Mattermost Server allows user to get private channel names in github.com/mattermost/mattermost-server

Mattermost Server allows user to get private channel names in github.com/mattermost/mattermost-server...

Denial Of Service (DoS)

github.com/mattermost/mattermost-server is vulnerable to Denial Of Service DoS. The vulnerability is due to improper memory management in the image proxy component, which allows an attacker to allocate excessive memory for multiple copies of proxied images without adequately handling large file...

Mattermost Server 9.5.x < 9.5.9 (MMSA-2024-00358)

The version of Mattermost Server installed on the remote host is prior to 9.5.9. It is, therefore, affected by a vulnerability as referenced in the MMSA-2024-00358 advisory. - Mattermost versions 9.5.x = 9.5.8 fail to properly authorize access to archived channels when viewing archived channels i...

Mattermost Server 9.5.x < 9.5.9 / 9.11.x < 9.11.1 (MMSA-2024-00373)

The version of Mattermost Server installed on the remote host is prior to 9.5.9 or 9.11.1. It is, therefore, affected by a vulnerability as referenced in the MMSA-2024-00373 advisory. - 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 i...

Mattermost Server 9.5.x < 9.5.8 / 9.8.x < 9.8.3 / 9.9.x < 9.9.2 / 9.10.x < 9.10.1 (MMSA-2024-00368)

The version of Mattermost Server installed on the remote host is prior to 9.5.8, 9.8.3, 9.9.2, or 9.10.1. It is, therefore, affected by a vulnerability as referenced in the MMSA-2024-00368 advisory. - 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 sanitiz...

Mattermost Server 9.5.x < 9.5.8 / 9.8.x < 9.8.3 / 9.9.x < 9.9.2 / 9.10.x < 9.10.1 (MMSA-2024-00365)

The version of Mattermost Server installed on the remote host is prior to 9.5.8, 9.8.3, 9.9.2, or 9.10.1. It is, therefore, affected by a vulnerability as referenced in the MMSA-2024-00365 advisory. - 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 restric...