CVE-2026-18952

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.

• Published Aug 12, 2026
• CVSS 8.6 high
• 0.5% chance of exploitation in the next 30 days (EPSS)

CVE-2026-18952 at the National Vulnerability Database