Vendor
Mattermost
512 known vulnerabilities.
Products
134 results · Clear filters · Feed
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Low 2.7
Disclosure of team owner email address when when accessing the teams API
Mattermost fails to honor the ShowEmailAddress setting when constructing a response to the /api/v4/users/me/teams API endpoint, allowing an attacker with team admin privileges to learn the team owner's email address in the response.
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Low 2.7
Disclosure of team owner email address when regenerating Invite ID
Mattermost fails to honor the ShowEmailAddress setting when constructing a response to the "Regenerate Invite Id" API endpoint, allowing an attacker with team admin privileges to learn the team owner's email address in the response.
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Low 3.1
Authenticated user could send multiple requests containing a parameter which could fetch a large amount of data and can crash a Mattermost server
A denial-of-service vulnerability in the Mattermost allows an authenticated user to crash the server via multiple requests to one of the API endpoints which could fetch a large amount of data.
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Low 3.1
Server-side Denial of Service while processing a specifically crafted GIF file
Mattermost version 7.1.x and earlier fails to sufficiently process a specifically crafted GIF file when it is uploaded while drafting a post, which allows authenticated users to cause resource exhaustion while processing the file, resulting in server-side Den…
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Low 3.1
Server-side Denial of Service while processing a specifically crafted JPEG file
Mattermost version 7.0.x and earlier fails to sufficiently limit the in-memory sizes of concurrently uploaded JPEG images, which allows authenticated users to cause resource exhaustion on specific system configurations, resulting in server-side Denial of Serv…
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Low 3.7
Playbook members are allowed to escalate their membership privileges and perform actions restricted to playbook admins.
Mattermost Playbooks plugin 1.25 and earlier fails to properly restrict user-level permissions, which allows playbook members to escalate their membership privileges and perform actions restricted to playbook admins.
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Low 3.7
Invitation Email is resent as a Reminder after invalidating pending email invites
Mattermost 6.4.x and earlier fails to properly invalidate pending email invitations when the action is performed from the system console, which allows accidentally invited users to join the workspace and access information from the public teams and channels.
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Low 3.5
A specifically drafted Playbook could trigger large amount of webhook requests leading to Denial of Service
Mattermost Playbooks plugin v1.24.0 and earlier fails to properly check the limit on the number of webhooks, which allows authenticated and authorized users to create a specifically drafted Playbook which could trigger a large amount of webhook requests leadi…
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Low 2.0
HTML Injection while inviting Guests
Mattermost 6.3.0 and earlier fails to properly sanitize the HTML content in the email invitation sent to guest users, which allows registered users with special permissions to invite guest users to inject unescaped HTML content in the email invitations.
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Low 3.3
Sysadmin can override existing configs & bypass restrictions like EnableUploads
One of the API in Mattermost version 6.3.0 and earlier fails to properly protect the permissions, which allows the system administrators to combine the two distinct privileges/capabilities in a way that allows them to override certain restricted configuration…
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Low 2.6
Users can view the contents of an archived channel when access is explicitly denied by the system admin
Mattermost 6.1 and earlier fails to sufficiently validate permissions while viewing archived channels, which allows authenticated users to view contents of archived channels even when this is denied by system administrators by directly accessing the APIs.
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Low 3.5
Mattermost 6.0 and earlier fails to sufficiently validate parameters during post creation, which allows authenticated a…
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Low 3.7
Mattermost 6.0 and earlier fails to sufficiently validate the email address during registration, which allows attackers…
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Low 3.7
Cross-site Scripting in Mattermost
Mattermost 5.38 and earlier fails to sufficiently sanitize clipboard contents, which allows a user-assisted attacker to inject arbitrary web script in product deployments that explicitly disable the default CSP.