Bio-formats CVEs and Security Vulnerabilities

CVE-2026-22186

Bio-Formats <= 8.3.0 XXE in Leica XLEF Metadata Parser

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.

CVSS 4.0 · 4.6 Medium EPSS < 1% KEV · Not listed

Vendors

Openmicroscopy

Products

Bio-formats

CVE-2026-22187

Bio-Formats <= 8.3.0 Memoizer Unsafe Deserialization via .bfmemo Cache Files

Bio-Formats versions up to and including 8.3.0 perform unsafe Java deserialization of attacker-controlled memoization cache files (.bfmemo) during image processing. The loci.formats.Memoizer class automatically loads and deserializes memo files associated with images without validation, integrity checks, or trust enforcement. An attacker who can supply a crafted .bfmemo file alongside an image can trigger deserialization of untrusted data, which may result in denial of service, logic manipulation, or potentially remote code execution in environments where suitable gadget chains are present on the classpath.

CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed