CVE-2026-39571: Themefic Instantio

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in Themefic Instantio instantio allows Retrieve Embedded Sensitive Data.This issue affects Instantio: from n/a through <= 3.3.30.

Affected products

• Themefic Instantio: up to and including 3.3.30

Published 2026-04-08. Last modified 2026-07-24.