Mattermost: >> Mattermost Server >> 7.8.0 Security Vulnerabilities
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
CVSS Score
4.3
EPSS Score
0.001
Published
2024-02-29
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.
CVSS Score
3.1
EPSS Score
0.001
Published
2024-02-29
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.
CVSS Score
4.3
EPSS Score
0.001
Published
2024-02-29
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.
CVSS Score
4.3
EPSS Score
0.003
Published
2024-02-29
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.
CVSS Score
4.3
EPSS Score
0.001
Published
2024-02-29
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 attempt to retrive the aforementioned post.
CVSS Score
4.3
EPSS Score
0.003
Published
2024-02-09
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.
CVSS Score
3.5
EPSS Score
0.001
Published
2024-02-09
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.
CVSS Score
3.4
EPSS Score
0.002
Published
2024-02-09
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.
CVSS Score
3.1
EPSS Score
0.001
Published
2024-02-09
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.
CVSS Score
4.3
EPSS Score
0.002
Published
2024-01-02
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