CVE-2023-2787 Collapsed Reply Threads APIs leak message contents from private channels

Mattermost fails to check channel membership when accessing message threads, allowing an attacker to access arbitrary posts by using the message threads API...

CVE-2023-2787 Collapsed Reply Threads APIs leak message contents from private channels

Mattermost fails to check channel membership when accessing message threads, allowing an attacker to access arbitrary posts by using the message threads API...

CVE-2023-2787 Collapsed Reply Threads APIs leak message contents from private channels

Mattermost fails to check channel membership when accessing message threads, allowing an attacker to access arbitrary posts by using the message threads API...

CVE-2023-2787

Mattermost is affected by CVE-2023-2787: a channel membership check failure when accessing message threads allows viewing posts via the Message Threads API. The root cause is an access control error that does not verify identity of channel members for message-thread access, potentially exposing c...