Mattermost Server vulnerabilities

CVE-2024-2446 [MEDIUM] CWE-400 CVE-2024-2446: Mattermost versions 8.1.x before 8.1.10, 9.2.x before 9.2.6, 9.3.x before 9.3.2, and 9.4.x before 9. Mattermost versions 8.1.x before 8.1.10, 9.2.x before 9.2.6, 9.3.x before 9.3.2, and 9.4.x before 9.4.3 fail to limit the number of @-mentions processed per message, allowing an authenticated attacker to crash the client applications of other users via large, crafted messages.

CVE-2024-1952 [MEDIUM] CWE-200 CVE-2024-1952: Mattermost version 8.1.x before 8.1.9 fails to sanitize data associated with permalinks when a plugi Mattermost version 8.1.x before 8.1.9 fails to sanitize data associated with permalinks when a plugin updates an ephemeral post, allowing an authenticated attacker who can control the ephemeral post update to access individual posts' contents in channels they are not a member of.

CVE-2024-1887 [MEDIUM] CWE-284 CVE-2024-1887: Mattermost fails to check if compliance export is enabled when fetching posts of public channels all 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.

CVE-2024-23493 [MEDIUM] CWE-200 CVE-2024-23493: Mattermost fails to properly authorize the requests fetching team associated AD/LDAP groups, allowin Mattermost fails to properly authorize the requests fetching team associated AD/LDAP groups, allowing a user to fetch details of AD/LDAP groups of a team that they are not a member of.

CVE-2024-1888 [MEDIUM] CWE-284 CVE-2024-1888: Mattermost fails to check the "invite_guest" permission when inviting guests of other teams to a tea Mattermost fails to check the "invite_guest" permission when inviting guests of other teams to a team, allowing a member with permissions to add other members but not to add guests to add a guest to a team as long as the guest was already a guest in another team of the server

CVE-2024-23488 [MEDIUM] CWE-284 CVE-2024-23488: Mattermost fails to properly restrict the access of files attached to posts in an archived channel, Mattermost fails to properly restrict the access of files attached to posts in an archived channel, resulting in members being able to access files of archived channels even if the “Allow users to view archived channels” option is disabled.

CVE-2024-1953 [MEDIUM] CWE-400 CVE-2024-1953: Mattermost versions 8.1.x before 8.1.9, 9.2.x before 9.2.5, 9.3.0, and 9.4.x before 9.4.2 fail to li Mattermost versions 8.1.x before 8.1.9, 9.2.x before 9.2.5, 9.3.0, and 9.4.x before 9.4.2 fail to limit the number of role names requested from the API, allowing an authenticated attacker to cause the server to run out of memory and crash by issuing an unusually large HTTP request.

CVE-2024-1942 [MEDIUM] CWE-284 CVE-2024-1942: Mattermost versions 8.1.x before 8.1.9, 9.2.x before 9.2.5, and 9.3.0 fail to sanitize the metadata Mattermost versions 8.1.x before 8.1.9, 9.2.x before 9.2.5, and 9.3.0 fail to sanitize the metadata on posts containing permalinks under specific conditions, which allows an authenticated attacker to access the contents of individual posts in channels they are not a member of.

CVE-2024-24988 [MEDIUM] CWE-400 CVE-2024-24988: Mattermost fails to properly validate the length of the emoji value in the custom user status, allow Mattermost fails to properly validate the length of the emoji value in the custom user status, allowing an attacker to send multiple times a very long string as an emoji value causing high resource consumption and possibly crashing the server.

CVE-2024-1949 [LOW] CWE-200 CVE-2024-1949: A race condition in Mattermost versions 8.1.x before 8.1.9, and 9.4.x before 9.4.2 allows an authent A race condition in Mattermost versions 8.1.x before 8.1.9, and 9.4.x before 9.4.2 allows an authenticated attacker to gain unauthorized access to individual posts' contents via carefully timed post creation while another user deletes posts.

CVE-2024-1402 [MEDIUM] CWE-400 CVE-2024-1402: Mattermost fails to check if a custom emoji reaction exists when sending it to a post and to limit t 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 to overloading when clients attemp

CVE-2024-24774 [MEDIUM] CWE-863 CVE-2024-24774: Mattermost Jira Plugin handling subscriptions fails to check the security level of an incoming issue Mattermost Jira Plugin handling subscriptions fails to check the security level of an incoming issue or limit it based on the user who created the subscription resulting in registered users on Jira being able to create webhooks that give them access to all Jira issues.

CVE-2024-24776 [MEDIUM] CWE-284 CVE-2024-24776: Mattermost fails to check the required permissions in the POST /api/v4/channels/stats/member_count A 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.

CVE-2024-23319 [LOW] CWE-352 CVE-2024-23319: Mattermost Jira Plugin fails to protect against logout CSRF allowing an attacker to post a specially Mattermost Jira Plugin fails to protect against logout CSRF allowing an attacker to post a specially crafted message that would disconnect a user's Jira connection in Mattermost only by viewing the message.

CVE-2023-47858 [MEDIUM] CWE-284 CVE-2023-47858: Mattermost fails to properly verify the permissions needed for viewing archived public channels,  al 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//channels/deleted endpoint.

CVE-2023-48732 [MEDIUM] CWE-200 CVE-2023-48732: Mattermost fails to scope the WebSocket response around notified users to a each user separately res 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-2023-50333 [MEDIUM] CWE-284 CVE-2023-50333: Mattermost fails to update the permissions of the current session for a user who was just demoted to 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-2023-7113 [MEDIUM] CWE-79 CVE-2023-7113: Mattermost version 8.1.6 and earlier fails to sanitize channel mention data in posts, which allows a 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-2023-49607 [HIGH] CWE-754 CVE-2023-49607: Mattermost fails to validate the type of the "reminder" body request parameter allowing an attacker 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-2023-45316 [HIGH] CWE-352 CVE-2023-45316: Mattermost fails to validate if a relative path is passed in /plugins/playbooks/api/v0/telemetry/run Mattermost fails to validate if a relative path is passed in /plugins/playbooks/api/v0/telemetry/run/ 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.