CVE-2024-31859

Summary

CVE-2024-31859 is a vulnerability affecting Mattermost versions 9.5.x up to 9.5.3, 9.6.x up to 9.6.1, and 8.1.x up to 8.1.12. This issue arises due to insufficient authorization checks in the platform. A member with existing access to a channel can execute a playbook, exploiting this flaw to promote themselves to an admin role within the channel. This vulnerability poses a significant risk to organizations using Mattermost, as unauthorized promotion of members could lead to unintended access to sensitive information and functionality.

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