GitHub Advisoryadvisory · Maven
GHSA-fcqj-76g3-q7qm Bio-Formats has an XML External Entity (XXE) vulnerability
MEDIUM
Official page ↗
- Aliases
- CVE-2026-22186
- Ecosystem
- Maven
- Packages
- ome:pom-bio-formats
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
- Weaknesses
- CWE-611
- Reviewed
- 2026-01-08
Affected packages
• Maven ome:pom-bio-formats: <= 8.3.0 (no fix yet)
Description
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.
Related
Alias · CVE (1)
- CVE-2026-22186 Bio-Formats versions up to and including 8.3.0 contain an XML External Entity (XXE) vulnerability in the Leica Microsystems metadata… vulnerability
Weakness · CWE (1)
- CWE-611 Improper Restriction of XML External Entity Reference weakness
References
- https://github.com/ome/bioformats/security/advisories/GHSA-x9vc-qh97-8gjp web
- https://nvd.nist.gov/vuln/detail/CVE-2026-22186 advisory
- https://docs.openmicroscopy.org/bio-formats web
- https://github.com/ome/bioformats package
- https://seclists.org/fulldisclosure/2026/Jan/6 web
- https://www.vulncheck.com/advisories/bio-formats-xxe-in-leica-xlef-metadata-parser web