All vulnerabilities

Servers and applications

CVE-2026-72685

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.

Severity
Medium 4.3
Published
13 Aug 2026
Last changed
1 Sept 2026
Added to UpHeron
21 Oct 2026
Fixed in
8.19.20, 9.4.5
Sources
NVD

Affected software

SoftwareAffected versions
ElasticsearchServers and applications · cpe:a:elastic:elasticsearch
  • From 8.0.0 before 8.19.20
  • From 9.0.0 before 9.4.5

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-72685
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-72685