| CVE-2024-1887 | MÉDIO4.3 | Mattermost fails to check if compliance export is enabled when fetching posts of public channels allowing a user that is not a member of the public channel to fetch the posts, which will not be audited in the compliance export.
| 29/02/2024 |
| CVE-2024-1402 | MÉDIO4.3 | Mattermost fails to check if a custom emoji reaction exists when sending it to a post and to limit the amount of custom emojis allowed to be added in a post, allowing an attacker sending a huge amount of non-existent custom emojis in a post to crash the mobile app of a user seeing the post and to crash the server due t | 09/02/2024 |
| CVE-2024-24776 | MÉDIO4.3 | Mattermost fails to check the required permissions in the POST /api/v4/channels/stats/member_count API resulting in channel member counts being leaked to a user without permissions.
| 09/02/2024 |
| CVE-2023-50333 | MÉDIO4.3 | 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.
| 02/01/2024 |
| CVE-2023-48732 | MÉDIO4.3 | 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.
| 02/01/2024 |
| CVE-2023-47858 | MÉDIO4.3 | 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.
| 02/01/2024 |
| CVE-2023-7113 | MÉDIO6.1 | 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.
| 29/12/2023 |
| CVE-2023-5968 | MÉDIO4.9 | Mattermost fails to properly sanitize the user object when updating the username, resulting in the password hash being included in the response body.
| 06/11/2023 |
| CVE-2023-1776 | MÉDIO5.4 | Boards in Mattermost allows an attacker to upload a malicious SVG image file as an attachment to a card and share it using a direct link to the file.
| 31/03/2023 |
| CVE-2023-1775 | MÉDIO6.5 | When running in a High Availability configuration, Mattermost fails to sanitize some of the user_updated and post_deleted events broadcast to all users, leading to disclosure of sensitive information to some of the users with currently connected Websocket clients.
| 31/03/2023 |
| CVE-2023-1774 | MÉDIO5.4 | When processing an email invite to a private channel on a team, Mattermost fails to validate the inviter's permission to that channel, allowing an attacker to invite themselves to a private channel.
| 31/03/2023 |
| CVE-2022-2401 | MÉDIO6.5 | 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. | 14/07/2022 |
| CVE-2022-1385 | MÉDIO4.6 | 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. | 19/04/2022 |
| CVE-2022-1384 | ALTO8.8 | 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. | 19/04/2022 |
| CVE-2022-1337 | MÉDIO6.5 | The image proxy component in Mattermost version 6.4.1 and earlier allocates memory for multiple copies of a proxied image, which allows an authenticated attacker to crash the server via links to very large image files. | 13/04/2022 |
| CVE-2022-1332 | MÉDIO4.3 | One of the API in Mattermost version 6.4.1 and earlier fails to properly protect the permissions, which allows the authenticated members with restricted custom admin role to bypass the restrictions and view the server logs and server config.json file contents. | 13/04/2022 |
| CVE-2021-37860 | MÉDIO6.1 | 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. | 22/09/2021 |
| CVE-2018-21258 | ALTO7.5 | An issue was discovered in Mattermost Server before 5.1. It allows attackers to cause a denial of service via the invite_people slash command. | 19/06/2020 |
| CVE-2020-14457 | MÉDIO5.3 | An issue was discovered in Mattermost Server before 5.20.0. Non-members can receive broadcasted team details via the update_team WebSocket event, aka MMSA-2020-0012. | 19/06/2020 |