CVE-2025-36530 Import Path Traversal Enables Unauthorized Unsigned Plugin Installation

Mattermost versions 10.9.x = 10.9.1, 10.8.x = 10.8.3, 10.5.x = 10.5.8, 9.11.x = 9.11.17 fail to properly validate file paths during plugin import operations which allows restricted admin users to install unauthorized custom plugins via path traversal in the import functionality, bypassing plugin...

GO-2025-3869 Mattermost Confluence Plugin has Missing Authorization vulnerability in github.com/mattermost/mattermost-plugin-confluence

Mattermost Confluence Plugin has Missing Authorization vulnerability in github.com/mattermost/mattermost-plugin-confluence...

CVE-2025-44001

Mattermost Confluence Plugin version 1.5.0 fails to check the access of the user to the channel which allows attackers to get channel subscription details without proper access to the channel via API call to the Get Channel Subscriptions details endpoint...

Improper Check for Unusual or Exceptional Conditions

Overview Affected versions of this package are vulnerable to Improper Check for Unusual or Exceptional Conditions due to improper handling of unexpected request bodies in the update channel subscription endpoint. An attacker can cause the plugin to crash by repeatedly sending invalid request bodi...

Missing Authentication for Critical Function

Overview Affected versions of this package are vulnerable to Missing Authentication for Critical Function due to an API call to edit the channel subscription endpoint. An attacker can modify channel subscriptions by sending unauthorized API requests. Remediation Upgrade...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization via the create channel subscription endpoint. An attacker can create unauthorized channel subscriptions by making API calls without proper access checks. Remediation Upgrade...

Improper Validation of Specified Type of Input

Overview Affected versions of this package are vulnerable to Improper Validation of Specified Type of Input via the create channel subscription endpoint when unexpected request bodies are not properly handled. An attacker can cause the plugin to crash by repeatedly sending invalid request bodies...

Improper Check for Unusual or Exceptional Conditions

Overview Affected versions of this package are vulnerable to Improper Check for Unusual or Exceptional Conditions due to improper handling of unexpected request bodies in the update channel subscription endpoint. An attacker can cause the plugin to crash by repeatedly sending invalid request bodi...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization via the create subscription endpoint. An attacker can gain unauthorized access to information by creating a subscription to a resource without proper access rights. Remediation Upgrade...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization via the GET autocomplete/GetChannelSubscriptions endpoint. An attacker can retrieve channel subscription details by making unauthorized API calls. Remediation Upgrade...

Missing Authentication for Critical Function

Overview Affected versions of this package are vulnerable to Missing Authentication for Critical Function due to an API call to edit the channel subscription endpoint. An attacker can modify channel subscriptions by sending unauthorized API requests. Remediation Upgrade...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization via the edit subscription endpoint. An attacker can gain unauthorized access to edit subscriptions for spaces they do not have permission to access by sending crafted requests. Remediation Upgrade...

Missing Authentication for Critical Function

Overview Affected versions of this package are vulnerable to Missing Authentication for Critical Function via the create channel subscription endpoint, which fails to check the authorization of the user. An attacker can gain unauthorized access to create channel subscriptions by making API calls...

CVE-2025-54458 Unauthorized Subscription Creation to Confluence Space in Mattermost Confluence Plugin

Mattermost Confluence Plugin version 1.5.0 fails to check the access of the user to the Confluence space which allows attackers to create a subscription for a Confluence space the user does not have access to via the create subscription endpoint...

CVE-2025-48731 Unauthorized Subscription Edit to Confluence Space in Mattermost Confluence Plugin

Mattermost Confluence Plugin version 1.5.0 fails to check the access of the user to the Confluence space which allows attackers to edit a subscription for a Confluence space the user does not have access for via edit subscription endpoint...

CVE-2025-44004 Unauthenticated Channel Subscription Creation in Mattermost Confluence Plugin

Mattermost Confluence Plugin version 1.5.0 fails to check the authorization of the user to the Mattermost instance which allows attackers to create a channel subscription without proper authorization via API call to the create channel subscription endpoint...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization through improper enforcement of channel member permissions for playbook run participants. An attacker without the 'Manage Channel Members' permission can add or remove users from public and private channels by...

CVE-2024-43105

Mattermost Plugin Channel Export versions =1.0.0 fail to restrict concurrent runs of the /export command which allows a user to consume excessive resource by running the /export command multiple times at once...

CVE-2025-27936

Mattermost Plugin MSTeams versions 2.1.0 and Mattermost Server versions 10.5.x =10.5.1 with the MS Teams plugin enabled fail to perform constant time comparison on a MSTeams plugin webhook secret which allows an attacker to retrieve the webhook secret of the MSTeams plugin via a timing attack...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the updateChannelAction function, which does not sufficiently check user permissions before executing a delete operation. Any user can delete posts containing actions posted by the Playbooks bot. Remediation...