Vulnerability intelligence
CVE-2026-18952 and is rated High severity with a CVSS score of 8.1. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
Impacted Versions: OpenSearch Security Analytics Plugin (open-source, self-managed): - Affected: >= 2.15.0 - Fixed: >= 3.5.0 Amazon OpenSearch Service (AWS Managed): - Affected: Domains running engine versions >= 2.15.0 - Fixed: Addressed via service software update for engine version 3.5.
Missing input validation in the threat intelligence feed parser in the OpenSearch Security Analytics plugin might allow an authenticated remote user to perform server-side request forgery and read local files via a crafted URL parameter to the threat intel source configuration endpoint.
Source: NVD