CVE-2024-9155

Summary

CVE-2024-9155 is a vulnerability affecting Mattermost versions 9.10.x up to 9.10.1, 9.9.x up to 9.9.2, and 9.5.x up to 9.5.8. This issue arises due to a failure in the access control system. Unauthorized users can view files in channels that they are members of, even if those files have not been linked to a post. This poses a significant risk as sensitive information in unlinked channel files may be exposed. Attackers can exploit this vulnerability to gain insights into confidential data, potentially leading to data breaches. It is essential for users to update their Mattermost installations to the latest, secure versions to mitigate this threat.

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