CVE-2026-22186: Openmicroscopy Bio-Formats

High severity, CVSS 7.1. EPSS: 0.2% chance of exploitation in the next 30 days.

Bio-Formats versions up to and including 8.3.0 contain an XML External Entity (XXE) vulnerability in the Leica Microsystems metadata parsing component (e.g., XLEF). The parser uses an insecurely configured DocumentBuilderFactory when processing Leica XML-based metadata files, allowing external entity expansion and external DTD loading. A crafted metadata file can trigger outbound network requests (SSRF), access local system resources where readable, or cause a denial of service during XML parsing.

Affected products

• Openmicroscopy Bio-Formats: up to and including 8.3.0

Published 2026-01-07. Last modified 2026-10-08.