Mattermost
By the Year
In 2024 there have been 0 vulnerabilities in Mattermost . Last year Mattermost had 42 security vulnerabilities published. Right now, Mattermost is on track to have less security vulnerabilities in 2024 than it did last year.
Year | Vulnerabilities | Average Score |
---|---|---|
2024 | 0 | 0.00 |
2023 | 42 | 5.65 |
2022 | 10 | 5.93 |
2021 | 3 | 6.57 |
2020 | 0 | 0.00 |
2019 | 0 | 0.00 |
2018 | 0 | 0.00 |
It may take a day or so for new Mattermost vulnerabilities to show up in the stats or in the list of recent security vulnerabilties. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Mattermost Security Vulnerabilities
Mattermost version 2.10.0 and earlier fails to sanitize deeplink paths, which
CVE-2023-7114
8.8 - High
- December 29, 2023
Mattermost version 2.10.0 and earlier fails to sanitize deeplink paths, which allows an attacker to perform CSRF attacks against the server.
Directory traversal
Mattermost fails to check whether the
CVE-2023-43754
4.3 - Medium
- November 27, 2023
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 is disabled.
Mattermost fails to properly validate the "Show Full Name" option in a few endpoints in Mattermost Boards
CVE-2023-45223
4.3 - Medium
- November 27, 2023
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.
Mattermost fails to properly check a redirect URL parameter
CVE-2023-47168
6.1 - Medium
- November 27, 2023
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=
Open Redirect
Mattermost fails to limit the amount of data extracted from compressed archives during board import in Mattermost Boards
CVE-2023-48268
7.5 - High
- November 27, 2023
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 zip (zip bomb).
Resource Exhaustion
Mattermost fails to limit the log size of server logs
CVE-2023-48369
5.3 - Medium
- November 27, 2023
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.
Resource Exhaustion
Mattermost fails to perform proper authorization in the /plugins/focalboard/api/v2/users endpoint
CVE-2023-6202
4.3 - Medium
- November 27, 2023
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.
Mattermost fails to properly limit the characters
CVE-2023-40703
7.5 - High
- November 27, 2023
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 string.
Resource Exhaustion
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
CVE-2023-35075
5.4 - Medium
- November 27, 2023
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.
Injection
Mattermost fails to check if hardened mode is enabled when overriding the username and/or the icon when posting a post
CVE-2023-47865
4.3 - Medium
- November 27, 2023
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 icon when making a post even if the Hardened Mode setting was enabled
Mattermost fails to properly validate requests to the Calls plugin
CVE-2023-5967
4.3 - Medium
- November 06, 2023
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
Improper Check for Unusual or Exceptional Conditions
Mattermost fails to properly sanitize the user object when updating the username
CVE-2023-5968
4.9 - Medium
- November 06, 2023
Mattermost fails to properly sanitize the user object when updating the username, resulting in the password hash being included in the response body.
Output Sanitization
Mattermost fails to properly sanitize the request to /api/v4/redirect_location
CVE-2023-5969
5.3 - Medium
- November 06, 2023
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.
Resource Exhaustion
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
CVE-2023-5522
4.3 - Medium
- October 17, 2023
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.
Mattermost fails to check the Show Full Name option at the /api/v4/teams/TEAM_ID/top/team_members endpoint
CVE-2023-5160
4.3 - Medium
- October 02, 2023
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
Mattermost fails to enforce character limits in all possible notification props
CVE-2023-5196
6.5 - Medium
- September 29, 2023
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 temporarily unavailable for its users.
Resource Exhaustion
Mattermost fails to properly verify the permissions when managing/updating a bot
CVE-2023-5159
2.7 - Low
- September 29, 2023
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.
AuthZ
Mattermost fails to properly check permissions when retrieving a post
CVE-2023-5193
2.7 - Low
- September 29, 2023
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.
AuthZ
Mattermost fails to properly validate permissions when demoting and deactivating a user
CVE-2023-5194
4.3 - Medium
- September 29, 2023
Mattermost fails to properly validate permissions when demoting and deactivating a user allowing for a system/user manager to demote / deactivate another manager
AuthZ
Mattermost fails to properly validate the permissions when soft deleting a team allowing a team member to soft delete other teams
CVE-2023-5195
5.4 - Medium
- September 29, 2023
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
AuthZ
Mattermost fails to delete the attachments when deleting a message in a thread
CVE-2023-4105
4.3 - Medium
- August 11, 2023
Mattermost fails to delete the attachments when deleting a message in a thread allowing a simple user to still be able to access and download the attachment of a deleted message
AuthZ
Mattermost fails to check if the requesting user is a guest before performing different actions to public playbooks
CVE-2023-4106
6.5 - Medium
- August 11, 2023
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.
AuthZ
Mattermost fails to properly validate the requesting user permissions when updating a system admin
CVE-2023-4107
6.5 - Medium
- August 11, 2023
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.
AuthZ
Mattermost fails to sanitize post metadata during audit logging resulting in permalinks contents being logged
CVE-2023-4108
7.5 - High
- August 11, 2023
Mattermost fails to sanitize post metadata during audit logging resulting in permalinks contents being logged
Insertion of Sensitive Information into Log File
Mattermost iOS app fails to properly validate the server certificate while initializing the TLS connection
CVE-2023-3615
8.1 - High
- July 17, 2023
Mattermost iOS app fails to properly validate the server certificate while initializing the TLS connection allowing a network attacker to intercept the WebSockets connection.
Improper Certificate Validation
Mattermost fails to unescape Markdown strings in a memory-efficient way
CVE-2023-2831
6.5 - Medium
- June 16, 2023
Mattermost fails to unescape Markdown strings in a memory-efficient way, allowing an attacker to cause a Denial of Service by sending a message containing a large number of escaped characters.
Resource Exhaustion
Mattermost fails to sanitize code permalinks
CVE-2023-2797
6.5 - Medium
- June 16, 2023
Mattermost fails to sanitize code permalinks, allowing an attacker to preview code from private repositories by posting a specially crafted permalink on a channel.
Injection
Mattermost fails to validate links on external websites when constructing a preview for a linked website
CVE-2023-2793
6.5 - Medium
- June 16, 2023
Mattermost fails to validate links on external websites when constructing a preview for a linked website, allowing an attacker to cause a denial-of-service by a linking to a specially crafted webpage in a message.
Resource Exhaustion
Mattermost fails to sanitize ephemeral error messages
CVE-2023-2792
6.5 - Medium
- June 16, 2023
Mattermost fails to sanitize ephemeral error messages, allowing an attacker to obtain arbitrary message contents by a specially crafted /groupmsg command.
Mattermost fails to properly truncate the postgres error log message of a search query failure
CVE-2023-2785
4.3 - Medium
- June 16, 2023
Mattermost fails to properly truncate the postgres error log message of a search query failure allowing an attacker to cause the creation of large log files which can result in Denial of Service
Resource Exhaustion
Mattermost fails to check if an admin user account active after an oauth2 flow is started
CVE-2023-2788
6.5 - Medium
- June 16, 2023
Mattermost fails to check if an admin user account active after an oauth2 flow is started, allowing an attacker with admin privileges to retain persistent access to Mattermost by obtaining an oauth2 access token while the attacker's account is deactivated.
Insufficient Session Expiration
Mattermost fails to check channel membership when accessing message threads
CVE-2023-2787
6.5 - Medium
- June 16, 2023
Mattermost fails to check channel membership when accessing message threads, allowing an attacker to access arbitrary posts by using the message threads API.
AuthZ
When creating a playbook run via the /dialog API, Mattermost fails to validate all parameters
CVE-2023-2791
4.3 - Medium
- June 16, 2023
When creating a playbook run via the /dialog API, Mattermost fails to validate all parameters, allowing an authenticated attacker to edit an arbitrary channel post.
AuthZ
Mattermost fails to verify if the requestor is a sysadmin or not, before
CVE-2023-2784
6.5 - Medium
- June 16, 2023
Mattermost fails to verify if the requestor is a sysadmin or not, before allowing `install` requests to the Apps allowing a regular user send install requests to the Apps.
AuthZ
Mattermost Apps Framework fails to verify
CVE-2023-2783
4.3 - Medium
- June 16, 2023
Mattermost Apps Framework fails to verify that a secret provided in the incoming webhook request allowing an attacker to modify the contents of the post sent by the Apps.
AuthZ
Mattermost fails to properly check the permissions when executing commands
CVE-2023-2786
4.3 - Medium
- June 16, 2023
Mattermost fails to properly check the permissions when executing commands allowing a member with no permissions to post a message in a channel to actually post it by executing channel commands.
AuthZ
Mattermost fails to normalize UTF confusable characters when determining if a preview should be generated for a hyperlink
CVE-2023-2808
5.3 - Medium
- May 29, 2023
Mattermost fails to normalize UTF confusable characters when determining if a preview should be generated for a hyperlink, allowing an attacker to trigger link preview on a disallowed domain using a specially crafted link.
Mattermost Sever fails to redact the DB username and password before emitting an application log during server initialization
CVE-2023-2514
7.5 - High
- May 12, 2023
Mattermost Sever fails to redact the DB username and password before emitting an application log during server initialization.
Insertion of Sensitive Information into Log File
Mattermost fails to invalidate existing authorization codes when deauthorizing an OAuth2 app
CVE-2023-2193
9.1 - Critical
- April 20, 2023
Mattermost fails to invalidate existing authorization codes when deauthorizing an OAuth2 app, allowing an attacker possessing an authorization code to generate an access token.
AuthZ
Mattermost fails to check the "Show Full Name" setting when rendering the result for the /plugins/focalboard/api/v2/users API call
CVE-2023-1562
4.3 - Medium
- March 22, 2023
Mattermost fails to check the "Show Full Name" setting when rendering the result for the /plugins/focalboard/api/v2/users API call, allowing an attacker to learn the full name of a board owner.
Exposure of Resource to Wrong Sphere
A missing permissions check in the /plugins/playbooks/api/v0/runs API in Mattermost
CVE-2023-27263
6.5 - Medium
- February 27, 2023
A missing permissions check in the /plugins/playbooks/api/v0/runs API in Mattermost allows an attacker to list and view playbooks belonging to a team they are not a member of.
AuthZ
A missing permissions check in Mattermost Playbooks in Mattermost
CVE-2023-27264
6.5 - Medium
- February 27, 2023
A missing permissions check in Mattermost Playbooks in Mattermost allows an attacker to modify a playbook via the /plugins/playbooks/api/v0/playbooks/[playbookID] API.
AuthZ
A denial-of-service vulnerability in the Mattermost
CVE-2022-4045
6.5 - Medium
- November 23, 2022
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.
Allocation of Resources Without Limits or Throttling
A denial-of-service vulnerability in the Mattermost Playbooks plugin
CVE-2022-4019
6.5 - Medium
- November 23, 2022
A denial-of-service vulnerability in the Mattermost Playbooks plugin allows an authenticated user to crash the server via multiple large requests to one of the Playbooks API endpoints.
Allocation of Resources Without Limits or Throttling
A denial-of-service vulnerability in Mattermost
CVE-2022-4044
6.5 - Medium
- November 23, 2022
A denial-of-service vulnerability in Mattermost allows an authenticated user to crash the server via multiple large autoresponder messages.
Allocation of Resources Without Limits or Throttling
The legacy Slack import feature in Mattermost version 6.7.0 and earlier fails to properly limit the sizes of imported files, which
CVE-2022-2406
6.5 - Medium
- July 14, 2022
The legacy Slack import feature in Mattermost version 6.7.0 and earlier fails to properly limit the sizes of imported files, which allows an authenticated attacker to crash the server by importing large files via the Slack import REST API.
Allocation of Resources Without Limits or Throttling
The Guest account feature in Mattermost version 6.7.0 and earlier fails to properly restrict the permissions, which
CVE-2022-2408
4.3 - Medium
- July 14, 2022
The Guest account feature in Mattermost version 6.7.0 and earlier fails to properly restrict the permissions, which allows a guest user to fetch a list of all public channels in the team, in spite of not being part of those channels.
AuthZ
Mattermost 6.3.0 and earlier fails to properly sanitize the HTML content in the email invitation sent to guest users, which
CVE-2022-1002
5.4 - Medium
- March 18, 2022
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.
XSS
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
CVE-2022-1003
4.9 - Medium
- March 18, 2022
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 configurations like EnableUploads.
Improper Privilege Management
Mattermost 6.3.0 and earlier fails to protect email addresses of the creator of the team via one of the APIs, which
CVE-2022-0708
6.5 - Medium
- February 21, 2022
Mattermost 6.3.0 and earlier fails to protect email addresses of the creator of the team via one of the APIs, which allows authenticated team members to access this information resulting in sensitive & private information disclosure.
Information Disclosure
Mattermost 6.1 and earlier fails to sufficiently validate permissions while viewing archived channels, which
CVE-2021-37864
6.5 - Medium
- January 18, 2022
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.
AuthZ
Mattermost 6.2 and earlier fails to sufficiently process a specifically crafted GIF file when it is uploaded while drafting a post, which
CVE-2021-37865
5.7 - Medium
- January 18, 2022
Mattermost 6.2 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 Denial of Service.
Resource Exhaustion
Mattermost 6.0.2 and earlier fails to sufficiently sanitize user's password in audit logs when user creation fails.
CVE-2021-37861
7.5 - High
- December 09, 2021
Mattermost 6.0.2 and earlier fails to sufficiently sanitize user's password in audit logs when user creation fails.
Insertion of Sensitive Information into Log File
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
CVE-2021-37860
6.1 - Medium
- September 22, 2021
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.
XSS
Fixed a bypass for a reflected cross-site scripting vulnerability affecting OAuth-enabled instances of Mattermost.
CVE-2021-37859
6.1 - Medium
- August 05, 2021
Fixed a bypass for a reflected cross-site scripting vulnerability affecting OAuth-enabled instances of Mattermost.
XSS
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