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muCommander through 1.6.2 contains a path traversal vulnerability in UnpackJob that allows attackers to write files outside the destination folder by bypassing its ZipSlip check with unnormalized remote paths. Attackers can craft TAR or ZIP entries like ../../.ssh/authorizedkeys that, when extracted to FTP or SFTP folders, create or overwrite files writable by the user's remote account.
muCommander before 0.8.2 stores credentials.xml with insecure permissions, which allows local users to obtain credentials.