Elasticsearchに制限のないリソース割り当ての脆弱性（CVE-2026-102411）
概要
Elasticsearchに制限のないリソース割り当ての脆弱性が確認されました。
バージョン 8.0.0 以上 8.19.23 未満、9.0.0 以上 9.4.7 未満、9.5.0 以上 9.5.3 未満に影響があります。
修正版 8.19.23 / 9.4.7 / 9.5.3 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID | CVE-2026-102411 |
|---|---|
| 脆弱性の種類 | 制限のないリソース割り当て |
| 危険度 | 中 |
| CVSSスコア |
6.5（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 公開日 | 2026年10月6日 |
| 更新日 | 2026年10月9日 |
影響を受ける製品
| 製品 | 影響を受けるバージョン | 修正版 | 出典 |
|---|---|---|---|
| Elasticsearch |
8.0.0 以上 8.19.23 未満、9.0.0 以上 9.4.7 未満、9.5.0 以上 9.5.3 未満 | 8.19.23 / 9.4.7 / 9.5.3 | NVD（National Vulnerability Database / NIST） |
推奨対応
- Elasticsearchを、ご利用中の系列に対応する修正版（8.19.23 / 9.4.7 / 9.5.3）またはそれ以降の公式最新版へ更新してください。
情報元の原文
NVD（National Vulnerability Database / NIST）
Allocation of Resources Without Limits or Throttling (CWE-770) in Elasticsearch can lead to Denial of Service via Excessive Allocation (CAPEC-130). Elasticsearch enforces a size limit on the user-supplied metadata field for each individual template resource, but does not limit the total memory used when multiple such resources are retrieved together. A user holding the *manage_index_templates* cluster privilege can register multiple resources each within the individual limit. Retrieving them together materializes all of their metadata values in memory at once, exhausting available heap and causing the affected node to fail with an out-of-memory error, resulting in a denial of service.
利用条件：米国政府の著作物（パブリックドメイン）・原文のまま掲載
Copyright 1999-2026 The MITRE Corporation
CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.
CVE List（CVE Program）
Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of Service
Allocation of Resources Without Limits or Throttling (CWE-770) in Elasticsearch can lead to Denial of Service via Excessive Allocation (CAPEC-130). Elasticsearch enforces a size limit on the user-supplied metadata field for each individual template resource, but does not limit the total memory used when multiple such resources are retrieved together. A user holding the *manage_index_templates* cluster privilege can register multiple resources each within the individual limit. Retrieving them together materializes all of their metadata values in memory at once, exhausting available heap and causing the affected node to fail with an out-of-memory error, resulting in a denial of service.
利用条件：CVE の利用条件（CVE Terms of Use）・原文のまま掲載
Copyright 1999-2026 The MITRE Corporation
CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.
情報元
- NVD（National Vulnerability Database / NIST）
https://nvd.nist.gov/vuln/detail/CVE-2026-102411 - CVE List（CVE Program）
https://www.cve.org/CVERecord?id=CVE-2026-102411