Elasticsearch version 6.8.17 | Elasticsearch Guide [6.8]

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Elasticsearch version 6.8.17edit

An uncontrolled recursion vulnerability that could lead to a denial of service attack was identified in the Elasticsearch Grok parser. A user with the ability to submit arbitrary queries to Elasticsearch could create a malicious Grok query that will crash the Elasticsearch node. All versions of Elasticsearch prior to 6.8.17 are affected by this flaw. You must upgrade to Elasticsearch version 6.8.17 to obtain the fix. CVE-2021-22144

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