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VulnerabilityPublished

CVE-2026-72685: Elastic Elasticsearch · Inefficient Algorithmic Complexity

Affects Elastic ElasticsearchSource CVE Database V5

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Not known to be exploited · CVSS 4.3 Medium.

Data as of 10 Nov 2026, 23:24 UTC

CVSS 3.1 base score
4.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 30% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
ElasticElasticsearchAffected
  • >=8.0.0 <=8.19.19
  • >=9.0.0 <=9.4.4
Fixed in–
Mavenorg.elasticsearch/elasticsearchpkg:maven/org.elasticsearch/elasticsearchOther threatsAffected
  • =8.0.0
  • =9.0.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until an official fix is available, monitor indexing performance and limit indexing permissions to trusted users to reduce risk. No official remediation or temporary fix has been published by Elastic as of now.

Description

A flaw in Elasticsearch allows a low-privileged authenticated user who can index documents to submit a single small document containing a crafted user-supplied input. Processing one such document occupies a worker thread from a bounded pool for a disproportionate amount of time, degrading the availability of indexing operations on the affected node.

References

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