CVE-2026-72639

Katalog CVE

CVSS 6.5 · Medium EPSS 0,42%

Kerentanan Memory Allocation with Excessive Size Value pada elasticsearch. Skor CVSS 3.1 6.5 (Medium) menurut elastic.co.

Deskripsi (NVD)

Elasticsearch does not enforce an upper bound on a user-supplied count accepted by a search highlighting option, and the allocation derived from that count is not accounted against any circuit breaker. An authenticated user holding only read privileges on a single searchable index can submit one small search request that causes the node to reserve an excessively large internal data structure. The allocation occurs before the existing highlighting safety limits are evaluated, so memory exhaustion raises a fatal error that terminates the Elasticsearch node process. This results in a denial of service for the affected node and degrades cluster routing and health. The defect is not volumetric and does not depend on the size of the indexed data, so a single request is sufficient.

Rincian

Terbit di NVD

13 Agustus 2026

Terakhir diubah

1 September 2026

Status NVD

Analyzed

CVSS 3.1

6.5 (Medium), sumber elastic.co
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-789: Memory Allocation with Excessive Size Value

EPSS (30 hari)

0,42% peluang dieksploitasi; lebih tinggi dari 34,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-9-5-1-security-update-esa-2026-120/389503 advisory vendor