# CVE-2026-103007 — Elastic Elasticsearch

> As of 2026-10-08, CVE-2026-103007 is a HIGH-severity vulnerability in Elastic Elasticsearch, CVSS v3.1 7.2, EPSS 0.3% (25.4th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-103007, most recently “Elastic Patches 14 Security Flaws Including Kibana Cross-Tenant Data Interception (CVE-2026-102406)”.

**Last updated:** 2026-10-08

## What is CVE-2026-103007?

Incorrect Authorization (CWE-863) in Elasticsearch can lead to Privilege Escalation via a delegated administrative privilege whose scope is not fully enforced during authorization checks. Elasticsearch contains an incorrect authorization weakness in a configurable, non-default privilege that lets an administrator delegate limited role-management capability to another user, scoped to specific indices. The authorization check that enforces this scoping does not correctly account for a role-definition setting that can expand the matched index set. A user holding this delegated privilege with a broadly-scoped index pattern can exploit this inconsistency by updating their own assigned role to gain access to indices that should remain restricted, including internal security data. This can enable further escalation up to full administrative control of the cluster.

The record classifies CVE-2026-103007 under weakness class [CWE-863](https://intel.threadlinqs.com/cwe/CWE-863). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs high-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 4 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.2 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **EPSS (FIRST):** 0.3% probability of exploitation in the next 30 days, higher than 25.4% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-10-06, last modified 2026-10-08

## Is CVE-2026-103007 being exploited?

It currently carries a trending score of 40 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [Elastic](https://intel.threadlinqs.com/vendors/elastic): Elasticsearch

## How to fix CVE-2026-103007

Vendor advisory: [https://discuss.elastic.co/t/elasticsearch-8-19-22-9-4-7-9-5-4-security-update-esa-2026-197/390871](https://discuss.elastic.co/t/elasticsearch-8-19-22-9-4-7-9-5-4-security-update-esa-2026-197/390871). Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

## Threat activity tracking CVE-2026-103007

1 tracked threat in the Threadlinqs corpus references CVE-2026-103007, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Elastic Patches 14 Security Flaws Including Kibana Cross-Tenant Data Interception (CVE-2026-102406)](https://intel.threadlinqs.com/threat/TL-2026-3268) — HIGH · 2026-10-10

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-10-10. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [discuss.elastic.co](https://discuss.elastic.co/t/elasticsearch-8-19-22-9-4-7-9-5-4-security-update-esa-2026-197/390871)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-103007
Full detection coverage and IOCs for threats exploiting CVE-2026-103007 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp