CVE-2026-22186
Bio-Formats <= 8.3.0 XXE in Leica XLEF Metadata Parser
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-611 |
| Vendor | open microscopy environment |
| Product | bio-formats |
| Published | Jan 7, 2026 |
| Last Updated | Mar 18, 2026 |
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Affected Versions
Open Microscopy Environment / Bio-Formats
0 ≤ 8.3.0
References
seclists.org: https://seclists.org/fulldisclosure/2026/Jan/6 github.com: https://github.com/ome/bioformats/security/advisories/GHSA-x9vc-qh97-8gjp docs.openmicroscopy.org: https://docs.openmicroscopy.org/bio-formats/ vulncheck.com: https://www.vulncheck.com/advisories/bio-formats-xxe-in-leica-xlef-metadata-parser
Credits
Ron Edgerson Beatriz Fresno Naumova