# CVE-2026-115715: Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of Service

Status: published. Published: 2026-11-03. Updated: 2026-11-03.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Elastic / Elasticsearch: ≥ 8.0.0; ≤ 8.19.23 (affected, semver); ≥ 9.0.0; ≤ 9.4.8 (affected, semver); ≥ 9.5.0; ≤ 9.5.5 (affected, semver). Source: CNA: elastic

## Severity and prioritization

- 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; source: CNA: elastic

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-770

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://discuss.elastic.co/t/elasticsearch-8-19-24-9-4-9-9-5-6-security-update-esa-2026-235/391372 (CNA: elastic)

## Provenance

- CNA: elastic: https://www.cve.org/CVERecord?id=CVE-2026-115715; retrieved 2026-11-03; source updated 2026-11-03

Revision: 04cd549bb452e6b1ebc27e0cc1544157129f3abd27c401d2c8b634070f214f92

Canonical: https://y2.dev/cve/CVE-2026-115715

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