Resource exhaustion in Elastic Elasticsearch

CVE-2026-115715

Allocation of Resources Without Limits or Throttling (CWE-770) in Elasticsearch can lead to denial of service via a specially crafted input value that is processed by an affected phonetic encoder of the analysis-phonetic plugin. An authenticated user with permission to write documents to or run searches against an index that uses an affected encoder can cause an Elasticsearch node to exhaust its heap memory. The node can become unresponsive or terminate.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-115715?
CVE-2026-115715 is a medium-severity vulnerability in Elastic Elasticsearch, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-11-03.
How severe is CVE-2026-115715?
Medium severity. CVSS v3 base score is 6.5 out of 10.