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CVE-2021-22144 Elasticsearch

Affected softwareElasticsearch
Severity6.5 Medium CVSS 3.1 2 scores
Fixed in6.8.17, 7.13.3
WeaknessCWE-674
Published26 Jul 2021
Updated17 Jun 2026

Description

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.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 5 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC none indexed
  • EPSS 2.4% chance in 30 days

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists.

  • Protection none
  • Action unverified
  • Review automated Upstream data
  • Record active
Decided by Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.

CVSS

6.5 MEDIUM v3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 6.5 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H NVD Primary published
CVSS 2.0 4.0 none AV:N/AC:L/Au:S/C:N/I:N/A:P NVD Primary

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update October 2022 ↗ CPU 2022-Q4 Oracle PeopleSoft / Elastic Search (Grok Parser) (8.58, 8.59, 8.60)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle PeopleSoft Elastic Search (Grok Parser) 8.58, 8.59, 8.60 8.58 · 8.59 · 8.60

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.elasticsearch:elasticsearch 0 6.8.17 unbounded
org.elasticsearch:elasticsearch 7.0.0-alpha1 7.13.3 unbounded

Products and versions

3 products, 5 version entries
SourceVendorProductSchemeAffected versions
nvd elastic elasticsearch generic < 6.8.17 · ≥ 7.0.0 and < 7.13.3
nvd oracle communications cloud native core automated test suite generic 1.8.0
osv org.elasticsearch elasticsearch generic < 6.8.17 · ≥ 7.0.0 and < 7.13.3

References

URLTags
https://discuss.elastic.co/t/elasticsearch-7-13-3-and-6-8-17-security-update/278100 WEB
https://security.netapp.com/advisory/ntap-20210827-0006 WEB
https://www.oracle.com/security-alerts/cpuapr2022.html WEB
https://security.netapp.com/advisory/ntap-20210827-0006/ Third Party Advisory

Timeline

Published2021-07-26By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.