UpHeron
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Servers and applications

CVE-2021-22144

In Elasticsearch versions before 7.13.3 and 6.8.17 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.

Severity
Medium 6.5
Published
26 Jul 2021
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
6.8.17, 7.13.3
Sources
NVD

Affected software

SoftwareAffected versions
ElasticsearchServers and applications · cpe:a:elastic:elasticsearch
  • Every version before 6.8.17
  • From 7.0.0 before 7.13.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-22144
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-22144