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In affected versions this vulnerability may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. 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is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"39140","Ordinal":"2","NoteData":"2021-08-23","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"39140","Ordinal":"3","NoteData":"2022-02-07","Type":"Other","Title":"Modified"}]}}}