CVE-2024-39830

Summary

CVE-2024-39830 is a vulnerability affecting Mattermost versions 9.8.x down to 9.5.x. During remote cluster token comparison, these versions fail to employ constant time comparison for remote cluster tokens, creating an opportunity for attackers to retrieve the remote cluster token via a timing attack. This issue can be exploited when shared channels are enabled. Successful exploitation may lead to unauthorized access to Mattermost clusters and potential data breaches. Users are strongly encouraged to upgrade to patched versions to mitigate this risk.

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