Design/Logic Flaw

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...

CVE-2021-37864

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...

Information disclosure

Mattermost Boards plugin v0.10.0 and earlier fails to protect email addresses of all users via one of the Boards APIs, which allows authenticated and unauthorized users to access this information resulting in sensitive & private information disclosure...

Code injection

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...

Authorization

Mattermost Boards plugin v0.10.0 and earlier fails to invalidate a session on the server-side when a user logged out of Boards, which allows an attacker to reuse old session token for authorization...

CVE-2021-37864 Users can view the contents of an archived channel when access is explicitly denied by the system admin

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...

CVE-2021-37864 Users can view the contents of an archived channel when access is explicitly denied by the system admin

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...

CVE-2021-37864

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...

CVE-2021-37864

Mattermost 6.1 and earlier contain an access control error where permissions are not sufficiently validated when viewing archived channels. An authenticated user can view contents of archived channels by directly calling the APIs, despite admin-imposed restrictions. Affected component: archived c...

CVE-2021-37867 Emails of all users are exposed via one of the Boards APIs

Mattermost Boards plugin v0.10.0 and earlier fails to protect email addresses of all users via one of the Boards APIs, which allows authenticated and unauthorized users to access this information resulting in sensitive & private information disclosure...

CVE-2021-37867

Mattermost Boards plugin v0.10.0 and earlier is affected by an information-disclosure vulnerability. The root cause is a failure to protect all users’ email addresses via one of the Boards APIs, allowing authenticated and unauthorized users to access sensitive personal data. Affected component: M...

CVE-2021-37867

Mattermost Boards plugin v0.10.0 and earlier fails to protect email addresses of all users via one of the Boards APIs, which allows authenticated and unauthorized users to access this information resulting in sensitive & private information disclosure...

CVE-2021-37867 Emails of all users are exposed via one of the Boards APIs

Mattermost Boards plugin v0.10.0 and earlier fails to protect email addresses of all users via one of the Boards APIs, which allows authenticated and unauthorized users to access this information resulting in sensitive & private information disclosure...

CVE-2021-37866 Session is not invalidated on server-side when user logged out of Boards

Mattermost Boards plugin v0.10.0 and earlier fails to invalidate a session on the server-side when a user logged out of Boards, which allows an attacker to reuse old session token for authorization...

CVE-2021-37866

Mattermost Boards plugin (v0.10.0 and earlier) does not invalidate server-side sessions on user logout, allowing reuse of the old session token for authorization. Documented as CVE-2021-37866 with multiple references (NVD, CVE lists, and country/NVD mirrors). Relevant impact details indicate netw...

CVE-2021-37866

Mattermost Boards plugin v0.10.0 and earlier fails to invalidate a session on the server-side when a user logged out of Boards, which allows an attacker to reuse old session token for authorization...

CVE-2021-37865

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...

CVE-2021-37865 Server-side Denial of Service while processing a specifically crafted GIF file

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...

CVE-2021-37865 Server-side Denial of Service while processing a specifically crafted GIF file

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...

CVE-2021-37865

Mattermost 6.2 and earlier is affected by a Denial of Service vulnerability when a specially crafted GIF is uploaded during drafting a post. The issue arises from insufficient processing of the GIF, allowing an authenticated user to exhaust server resources and cause a server-side DoS. Affected p...