Vulnerabilities (CVE)

Filtered by vendor Mattermost Subscribe
Filtered by product Mattermost Server
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2023-50333 1 Mattermost 1 Mattermost Server 2024-01-08 N/A 4.3 MEDIUM
Mattermost fails to update the permissions of the current session for a user who was just demoted to guest, allowing freshly demoted guests to change group names.
CVE-2023-48732 1 Mattermost 1 Mattermost Server 2024-01-08 N/A 4.3 MEDIUM
Mattermost fails to scope the WebSocket response around notified users to a each user separately resulting in the WebSocket broadcasting the information about who was notified about a post to everyone else in the channel.
CVE-2023-47858 1 Mattermost 1 Mattermost Server 2024-01-08 N/A 4.3 MEDIUM
Mattermost fails to properly verify the permissions needed for viewing archived public channels,  allowing a member of one team to get details about the archived public channels of another team via the GET /api/v4/teams/<team-id>/channels/deleted endpoint.
CVE-2023-7113 1 Mattermost 1 Mattermost Server 2024-01-05 N/A 6.1 MEDIUM
Mattermost version 8.1.6 and earlier fails to sanitize channel mention data in posts, which allows an attacker to inject markup in the web client.
CVE-2023-6727 1 Mattermost 1 Mattermost Server 2023-12-15 N/A 4.3 MEDIUM
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 a post, some playbook information, like the name, can be leaked. 
CVE-2023-6547 1 Mattermost 1 Mattermost Server 2023-12-14 N/A 5.4 MEDIUM
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 member of the team, got permissions to the playbook and was then removed from the team. 
CVE-2023-45316 1 Mattermost 1 Mattermost Server 2023-12-14 N/A 8.8 HIGH
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.
CVE-2023-49874 1 Mattermost 1 Mattermost Server 2023-12-14 N/A 4.3 MEDIUM
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.
CVE-2023-49809 1 Mattermost 1 Mattermost Server 2023-12-14 N/A 6.5 MEDIUM
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. 
CVE-2023-49607 1 Mattermost 1 Mattermost Server 2023-12-14 N/A 7.5 HIGH
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.
CVE-2023-45847 1 Mattermost 1 Mattermost Server 2023-12-14 N/A 7.5 HIGH
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
CVE-2023-46701 1 Mattermost 1 Mattermost Server 2023-12-14 N/A 5.3 MEDIUM
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
CVE-2023-6459 1 Mattermost 1 Mattermost Server 2023-12-12 N/A 5.3 MEDIUM
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.
CVE-2023-6458 1 Mattermost 1 Mattermost Server 2023-12-12 N/A 9.8 CRITICAL
Mattermost webapp fails to validate route parameters in/<TEAM_NAME>/channels/<CHANNEL_NAME> allowing an attacker to perform a client-side path traversal.
CVE-2023-3577 1 Mattermost 1 Mattermost Server 2023-07-27 N/A 4.3 MEDIUM
Mattermost fails to properly restrict requests to localhost/intranet during the interactive dialog, which could allow an attacker to perform a limited blind SSRF.
CVE-2023-3584 1 Mattermost 1 Mattermost Server 2023-07-27 N/A 3.1 LOW
Mattermost fails to properly check the authorization of POST /api/v4/teams when passing a team override scheme ID in the request, allowing an authenticated attacker with knowledge of a Team Override Scheme ID to create a new team with said team override scheme.
CVE-2023-3582 1 Mattermost 1 Mattermost Server 2023-07-27 N/A 4.3 MEDIUM
Mattermost fails to verify channel membership when linking a board to a channel allowing a low-privileged authenticated user to link a Board to a private channel they don't have access to, 
CVE-2023-3581 1 Mattermost 1 Mattermost Server 2023-07-27 N/A 8.1 HIGH
Mattermost fails to properly validate the origin of a websocket connection allowing a MITM attacker on Mattermost to access the websocket APIs.
CVE-2023-3587 1 Mattermost 1 Mattermost Server 2023-07-27 N/A 2.7 LOW
Mattermost fails to properly show information in the UI, allowing a system admin to modify a board state allowing any user with a valid sharing link to join the board with editor access, without the UI showing the updated permissions.
CVE-2023-3586 1 Mattermost 1 Mattermost Server 2023-07-27 N/A 5.4 MEDIUM
Mattermost fails to disable public Boards after the "Enable Publicly-Shared Boards" configuration option is disabled, resulting in previously-shared public Boards to remain accessible.
CVE-2023-3590 1 Mattermost 1 Mattermost Server 2023-07-27 N/A 7.5 HIGH
Mattermost fails to delete card attachments in Boards, allowing an attacker to access deleted attachments.
CVE-2023-3591 1 Mattermost 1 Mattermost Server 2023-07-27 N/A 8.2 HIGH
Mattermost fails to invalidate previously generated password reset tokens when a new reset token was created.
CVE-2023-3593 1 Mattermost 1 Mattermost Server 2023-07-27 N/A 6.5 MEDIUM
Mattermost fails to properly validate markdown, allowing an attacker to crash the server via a specially crafted markdown input.
CVE-2023-3585 1 Mattermost 1 Mattermost Server 2023-07-27 N/A 4.3 MEDIUM
Mattermost Boards fail to properly validate a board link, allowing an attacker to crash a channel by posting a specially crafted boards link.
CVE-2023-3613 1 Mattermost 1 Mattermost Server 2023-07-26 N/A 3.5 LOW
Mattermost WelcomeBot plugin fails to to validate the membership status when inviting or adding users to channels allowing guest accounts to be added or invited to channels by default.
CVE-2023-3614 1 Mattermost 1 Mattermost Server 2023-07-26 N/A 3.3 LOW
Mattermost fails to properly validate a gif image file, allowing an attacker to consume a significant amount of server resources, making the server unresponsive for an extended period of time by linking to specially crafted image file.
CVE-2022-2366 1 Mattermost 1 Mattermost Server 2022-07-28 5.0 MEDIUM 5.3 MEDIUM
Incorrect default configuration for trusted IP header in Mattermost version 6.7.0 and earlier allows attacker to bypass some of the rate limitations in place or use manipulated IPs for audit logging via manipulating the request headers.
CVE-2022-2401 1 Mattermost 1 Mattermost Server 2022-07-20 N/A 6.5 MEDIUM
Unrestricted information disclosure of all users in Mattermost version 6.7.0 and earlier allows team members to access some sensitive information by directly accessing the APIs.
CVE-2022-1982 1 Mattermost 1 Mattermost Server 2022-06-11 4.0 MEDIUM 6.5 MEDIUM
Uncontrolled resource consumption in Mattermost version 6.6.0 and earlier allows an authenticated attacker to crash the server via a crafted SVG attachment on a post.
CVE-2022-1385 1 Mattermost 1 Mattermost Server 2022-04-27 5.8 MEDIUM 4.6 MEDIUM
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.
CVE-2022-1384 1 Mattermost 1 Mattermost Server 2022-04-27 6.0 MEDIUM 8.8 HIGH
Mattermost version 6.4.x and earlier fails to properly check the plugin version when a plugin is installed from the Marketplace, which allows an authenticated and an authorized user to install and exploit an old plugin version from the Marketplace which might have known vulnerabilities.
CVE-2021-37862 1 Mattermost 1 Mattermost Server 2021-12-27 5.8 MEDIUM 5.4 MEDIUM
Mattermost 6.0 and earlier fails to sufficiently validate the email address during registration, which allows attackers to trick users into signing up using attacker-controlled email addresses via crafted invitation token.
CVE-2021-37863 1 Mattermost 1 Mattermost Server 2021-12-21 3.5 LOW 5.7 MEDIUM
Mattermost 6.0 and earlier fails to sufficiently validate parameters during post creation, which allows authenticated attackers to cause a client-side crash of the web application via a maliciously crafted post.
CVE-2019-20881 1 Mattermost 1 Mattermost Server 2021-07-21 7.5 HIGH 7.3 HIGH
An issue was discovered in Mattermost Server before 5.8.0. It mishandles brute-force attacks against MFA.
CVE-2019-20874 1 Mattermost 1 Mattermost Server 2021-07-21 5.0 MEDIUM 7.5 HIGH
An issue was discovered in Mattermost Server before 5.9.0, 5.8.1, 5.7.3, and 4.10.8. It allows attackers to obtain sensitive information during a role change.
CVE-2019-20869 1 Mattermost 1 Mattermost Server 2021-07-21 5.0 MEDIUM 5.3 MEDIUM
An issue was discovered in Mattermost Server before 5.10.0, 5.9.1, 5.8.2, and 4.10.9. A non-member could change the Update/Patch Channel endpoint for a private channel.
CVE-2019-20855 1 Mattermost 1 Mattermost Server 2021-07-21 5.0 MEDIUM 7.5 HIGH
An issue was discovered in Mattermost Server before 5.16.1, 5.15.2, 5.14.5, and 5.9.6. It allows attackers to obtain sensitive information (local files) during legacy attachment migration.
CVE-2019-20876 1 Mattermost 1 Mattermost Server 2021-07-21 5.5 MEDIUM 5.4 MEDIUM
An issue was discovered in Mattermost Server before 5.9.0, 5.8.1, 5.7.3, and 4.10.8. Users can deactivate themselves, bypassing a policy.
CVE-2019-20877 1 Mattermost 1 Mattermost Server 2021-07-21 5.0 MEDIUM 5.3 MEDIUM
An issue was discovered in Mattermost Server before 5.9.0, 5.8.1, 5.7.3, and 4.10.8. It allows attackers to obtain sensitive information about whether someone has 2FA enabled.
CVE-2020-14460 1 Mattermost 1 Mattermost Server 2021-07-21 4.0 MEDIUM 6.5 MEDIUM
An issue was discovered in Mattermost Server before 5.19.0, 5.18.1, 5.17.3, 5.16.5, and 5.9.8. Creation of a trusted OAuth application does not always require admin privileges, aka MMSA-2020-0001.
CVE-2019-20879 1 Mattermost 1 Mattermost Server 2021-07-21 4.0 MEDIUM 4.3 MEDIUM
An issue was discovered in Mattermost Server before 5.8.0, 5.7.2, 5.6.5, and 4.10.7. Changes to e-mail addresses do not require credential re-entry.
CVE-2019-20880 1 Mattermost 1 Mattermost Server 2021-07-21 5.0 MEDIUM 7.5 HIGH
An issue was discovered in Mattermost Server before 5.8.0, 5.7.2, 5.6.5, and 4.10.7. It allows attackers to cause a denial of service (memory consumption) via OpenGraph.
CVE-2019-20873 1 Mattermost 1 Mattermost Server 2021-07-21 4.0 MEDIUM 6.5 MEDIUM
An issue was discovered in Mattermost Server before 5.9.0, 5.8.1, 5.7.3, and 4.10.8. It allows attackers to obtain sensitive information during user activation/deactivation.
CVE-2019-20845 1 Mattermost 1 Mattermost Server 2021-07-21 5.0 MEDIUM 7.5 HIGH
An issue was discovered in Mattermost Server before 5.18.0. It allows attackers to cause a denial of service (memory consumption) via a large Slack import.
CVE-2019-20887 1 Mattermost 1 Mattermost Server 2021-07-21 4.0 MEDIUM 4.3 MEDIUM
An issue was discovered in Mattermost Server before 5.7.1, 5.6.4, 5.5.3, and 4.10.6. It does not honor flags API permissions when deciding whether a user can receive intra-team posts.
CVE-2019-20884 1 Mattermost 1 Mattermost Server 2021-07-21 5.0 MEDIUM 5.3 MEDIUM
An issue was discovered in Mattermost Server before 5.8.0. It allows attackers to partially attach a file to more than one post.
CVE-2019-20885 1 Mattermost 1 Mattermost Server 2021-07-21 5.0 MEDIUM 7.5 HIGH
An issue was discovered in Mattermost Server before 5.8.0. It does not always generate a robots.txt file.
CVE-2019-20859 1 Mattermost 1 Mattermost Server 2021-07-21 5.0 MEDIUM 7.5 HIGH
An issue was discovered in Mattermost Server before 5.15.0. Login access control can be bypassed via crafted input.
CVE-2019-20883 1 Mattermost 1 Mattermost Server 2021-07-21 3.5 LOW 4.3 MEDIUM
An issue was discovered in Mattermost Server before 5.8.0, when Town Square is set to Read-Only. Users can pin or unpin a post.
CVE-2019-20875 1 Mattermost 1 Mattermost Server 2021-07-21 5.0 MEDIUM 5.3 MEDIUM
An issue was discovered in Mattermost Server before 5.9.0, 5.8.1, 5.7.3, and 4.10.8. It allows a password reset to proceed while an e-mail address is being changed.