Vendor
Mattermost
512 known vulnerabilities.
Products
512 results · Feed
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Low 3.1
Leak Inaccessible Playbook Information via Channel Action IDOR
Mattermost fails to perform correct authorization checks when creating a playbook action, allowing users without access to the playbook to create playbook actions. If the playbook action created is to post a message in a channel based on specific keywords in …
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High 7.3
Reflected client side path traversal leading to CSRF in Playbooks
Mattermost fails to validate if a relative path is passed in /plugins/playbooks/api/v0/telemetry/run/<telem_run_id> as a telemetry run ID, allowing an attacker to use a path traversal payload that points to a different endpoint leading to a CSRF attack.
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Low 3.7
Playbooks access/modification by removed team member
Mattermost fails to validate team membership when a user attempts to access a playbook, allowing a user with permissions to a playbook but no permissions to the team the playbook is on to access and modify the playbook. This can happen if the user was once a …
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Medium 4.3
Playbook plugin crash via missing interface type assertion
Mattermost fails to validate the type of the "reminder" body request parameter allowing an attacker to crash the Playbook Plugin when updating the status dialog.
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Medium 4.3
Todo plugin gets crashed and disabled by member
Mattermost fails to handle a null request body in the /add endpoint, allowing a simple member to send a request with null request body to that endpoint and make it crash. After a few repetitions, the plugin is disabled.
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Medium 6.5
Inaccessible Post Information Leak via Run Timeline IDOR
Mattermost fails to perform authorization checks in the /plugins/playbooks/api/v0/runs/add-to-timeline-dialog endpoint of the Playbooks plugin allowing an attacker to get limited information about a post if they know the post ID
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Medium 4.3
IDOR when updating the tasks of a private playbook run
Mattermost fails to check whether a user is a guest when updating the tasks of a private playbook run allowing a guest to update the tasks of a private playbook run if they know the run ID.
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Medium 4.3
Playbook Plugin Crash via Run Checklist
Mattermost fails to to check the length when setting the title in a run checklist in Playbooks, allowing an attacker to send a specially crafted request and crash the Playbooks plugin
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Medium 5.3
Public endpoint /metrics of Calls plugin reveals channel IDs
Mattermost is grouping calls in the /metrics endpoint by id and reports that id in the response. Since this id is the channelID, the public /metrics endpoint is revealing channelIDs.
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High 7.1
Client side path traversal due to lack of route parameters validation
Mattermost webapp fails to validate route parameters in/<TEAM_NAME>/channels/<CHANNEL_NAME> allowing an attacker to perform a client-side path traversal.
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Medium 4.3
Open redirect in /oauth/<service>/mobile_login?redirect_to=
Mattermost fails to properly check a redirect URL parameter allowing for an open redirect was possible when the user clicked "Back to Mattermost" after providing a invalid custom url scheme in /oauth/{service}/mobile_login?redirect_to=
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Medium 4.3
Insecure Direct Object Reference in /plugins/focalboard/ api/v2/users of Mattermost Boards
Mattermost fails to perform proper authorization in the /plugins/focalboard/api/v2/users endpoint allowing an attacker who is a guest user and knows the ID of another user to get their information (e.g. name, surname, nickname) via Mattermost Boards.
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Medium 4.3
Permalink previews displayed for posts in archived channels even if users are disallowed to view archived channels
Mattermost fails to check whether the “Allow users to view archived channels” setting is enabled during permalink previews display, allowing members to view permalink previews of archived channels even if the “Allow users to view archived channels” setting …
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Medium 4.3
Log Flooding due to specially crafted requests in different endpoints
Mattermost fails to limit the log size of server logs allowing an attacker sending specially crafted requests to different endpoints to potentially overflow the log.
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Low 3.1
HTML injection via channel autocomplete
Mattermost fails to use innerText / textContent when setting the channel name in the webapp during autocomplete, allowing an attacker to inject HTML to a victim's page by create a channel name that is valid HTML. No XSS is possible though.
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Medium 4.3
Denial of Service via specially crafted block fields in Mattermost Boards
Mattermost fails to properly limit the characters allowed in different fields of a block in Mattermost Boards allowing a attacker to consume excessive resources, possibly leading to Denial of Service, by patching the field of a block using a specially crafted…
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Medium 4.3
Denial of Service via Board Import Zip Bomb
Mattermost fails to limit the amount of data extracted from compressed archives during board import in Mattermost Boards allowing an attacker to consume excessive resources, possibly leading to Denial of Service, by importing a board using a specially crafted…
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Medium 4.3
Users full name disclosure through Mattermost Boards with Show Full Name Option disabled
Mattermost fails to properly validate the "Show Full Name" option in a few endpoints in Mattermost Boards, allowing a member to get the full name of another user even if the Show Full Name option was disabled.
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Medium 4.3
Username and Icon override can be used by members when Hardened Mode is enabled
Mattermost fails to check if hardened mode is enabled when overriding the username and/or the icon when posting a post. If settings allowed integrations to override the username and profile picture when posting, a member could also override the username and i…
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Medium 5.3
Denial of Service via Link Preview in /api/v4/redirect_location
Mattermost fails to properly sanitize the request to /api/v4/redirect_location allowing an attacker, sending a specially crafted request to /api/v4/redirect_location, to fill up the memory due to caching large items.
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Medium 4.9CVE-2023-5968 Public exploit
Password hash in response body after username update
Mattermost fails to properly sanitize the user object when updating the username, resulting in the password hash being included in the response body.
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Medium 4.3
Denial of Service via crashing the Calls Plugin
Mattermost fails to properly validate requests to the Calls plugin, allowing an attacker sending a request without a User Agent header to cause a panic and crash the Calls plugin
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Low 2.9
Lack Of Secure Keyboard Entry Protection in MacOS Desktop
Mattermost Desktop for MacOS fails to utilize the secure keyboard input functionality provided by macOS, allowing for other processes to read the keyboard input.
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Low 3.7
Lack of Hardening against media exploitation from a remote origin
Mattermost Desktop fails to correctly handle permissions or prompt the user for consent on certain sensitive ones allowing media exploitation from a malicious mattermost server
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Low 3.1
Regex DoS from a malicious server enrolled in Desktop
Mattermost fails to properly validate a RegExp built off the server URL path, allowing an attacker in control of an enrolled server to mount a Denial Of Service.
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Medium 4.3
Mobile app freezes when receiving a post with hundreds of emojis
Mattermost Mobile fails to limit the maximum number of Markdown elements in a post allowing an attacker to send a post with hundreds of emojis to a channel and freeze the mobile app of users when viewing that particular channel.
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Medium 4.7
Mattermost Desktop logs all keystrokes during initial run after fresh installation
Mattermost Desktop fails to set an appropriate log level during initial run after fresh installation resulting in logging all keystrokes including password entry being logged.
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Medium 4.3
Denial of Service via multiple identical User IDs in /api/v4/users/ids
Mattermost fails to deduplicate input IDs allowing a simple user to cause the application to consume excessive resources and possibly crash by sending a specially crafted request to /api/v4/users/ids with multiple identical IDs.
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Medium 4.3
File Information Leak via IDOR in file_id in Draft Posts
Mattermost fails to properly check the creator of an attached file when adding the file to a draft post, potentially exposing unauthorized file information.
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Medium 4.3
Denial of Service via Opengraph Data Cache
Mattermost fails to enforce a limit for the size of the cache entry for OpenGraph data allowing an attacker to send a specially crafted request to the /api/v4/opengraph filling the cache and turning the server unavailable.
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Medium 4.3
Full name disclosure via team top membership with Show Full Name option disabled
Mattermost fails to check the Show Full Name option at the /api/v4/teams/TEAM_ID/top/team_members endpoint allowing a member to get the full name of another user even if the Show Full Name option was disabled
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Low 2.7
A system/user manager can demote / deactivate another manager
Mattermost fails to properly validate permissions when demoting and deactivating a user allowing for a system/user manager to demote / deactivate another manager
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Medium 6.5
A team member can soft delete other teams that they are not part of
Mattermost fails to properly validate the permissions when soft deleting a team allowing a team member to soft delete other teams that they are not part of
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Medium 4.9
System Role with manage posts permission can read posts of Direct Messages
Mattermost fails to properly check permissions when retrieving a post allowing for a System Role with the permission to manage channels to read the posts of a DM conversation.
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Medium 6.5
DoS via Channel Notification Properties
Mattermost fails to enforce character limits in all possible notification props allowing an attacker to send a really long value for a notification_prop resulting in the server consuming an abnormal quantity of computing resources and possibly becoming tempor…
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Low 3.8
A User Manager role with user edit permissions could manage/update bots
Mattermost fails to properly verify the permissions when managing/updating a bot allowing a User Manager role with user edit permissions to manage/update bots.
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Medium 4.3
Parameter tampering in the registration resulting in blocked accounts to be created
Mattermost fails to restrict which parameters' values it takes from the request during signup allowing an attacker to register users as inactive, thus blocking them from later accessing Mattermost without the system admin activating their accounts.
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Medium 4.5
Audit logging fails to sanitize post metadata
Mattermost fails to sanitize post metadata during audit logging resulting in permalinks contents being logged
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Medium 6.7
Incorrect authorization allows a user manager to update a system admin
Mattermost fails to properly validate the requesting user permissions when updating a system admin, allowing a user manager to update a system admin's details such as email, first name and last name.
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Medium 6.3
A guest user can perform various actions on public playbooks
Mattermost fails to check if the requesting user is a guest before performing different actions to public playbooks, resulting a guest being able to view, join, edit, export and archive public playbooks.