# CVE-2026-72684: Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of Service

> CVE-2026-72684: Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of Service. CVSS 6.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-72684
Last updated: 2026-09-01T15:04:40Z

- Published: 2026-08-13 19:10 UTC · Updated: 2026-09-01 15:04 UTC · Assigner: elastic
- CVSS: 6.5 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS: 0.42%, 36th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-770

## Description

A flaw in Elasticsearch allows an authenticated user holding only read privileges to submit a small search request containing a crafted user-supplied input. Processing that input causes a specific internal component to allocate memory without any upper bound, and the allocation occurs outside the scope of the existing memory accounting controls that were intended to constrain it. The resulting out-of-memory condition is fatal and terminates the affected node process, causing a denial of service.

## Affected vendors and products

- Elastic: Elasticsearch

## Tracked companies

- [Elastic Cloud](https://rewindex.com/company/elastic-cloud.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-72684)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-72684)
- [https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-security-update-esa-2026-76/389508](https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-security-update-esa-2026-76/389508)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-72684 · Markdown: https://rewindex.com/cve/CVE-2026-72684.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-72684 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:17:08.635Z