P4Verified

CVE-2026-103009: Elasticsearch 8.13.0 through 8.19.22, 9.0.0 through 9.4.7, 9.5.0 through 9.5.4

CVE-2026-103009. CVSS 3.1 base score 7.1 (HIGH, Vendor/CNA).

Affected technology

Elasticsearch · 8.13.0 through 8.19.22, 9.0.0 through 9.4.7, 9.5.0 through 9.5.4
Elastic

Description’s affected range: Through User-Controlled Key (CWE-639) in Elasticsearch can lead to Information Disclosure via a specially crafted cross-cluster search request that references an unauthorized shard identifier

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

The source reports that an attacker could access information they should not be able to access. Vendor/CNA’s CVSS 3.1 assessment (base score 7.1/10) rates confidentiality impact as high; integrity impact as low; availability impact as none.

Published 2026-10-07 02:35:18.616289+00:00

CWE: CWE-639
CCR priority: 28.4 /100 (P4)
CVSS 3.1: 7.1 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N · Vendor/CNA
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-07 02:34:12.333111+00:00 UTC
GitHub Advisory Database · Source record · observed 2026-10-07 02:36:03.777225+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-103009.html