CVE-2023-4478

Summary

CVE-2023-4478 is a vulnerability affecting Mattermost, an open-source team collaboration platform. The issue arises from Mattermost's failure to adequately restrict input during the sign-up process. An attacker can exploit this weakness by registering users with malicious parameters, resulting in the creation of inactive accounts. These inactive accounts subsequently block users from accessing Mattermost without administrative intervention to activate the accounts.

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