Vulnerability DatabaseCVE-2026-22186
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CVE-2026-22186
Published:January 07, 2026
Updated:August 05, 2026
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 Resources (8)
https://nvd.nist.gov/vuln/detail/CVE-2026-22186
https://docs.openmicroscopy.org/bio-formats/
https://seclists.org/fulldisclosure/2026/Jan/6
https://github.com/ome/bioformats
https://github.com/ome/bioformats/security/advisories/GHSA-x9vc-qh97-8gjp
https://www.vulncheck.com/advisories/bio-formats-xxe-in-leica-xlef-metadata-parser
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22186.json
https://docs.openmicroscopy.org/bio-formats
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CVSS v4
Base Score:
4.6
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
ACTIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.4
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Improper Restriction of XML External Entity Reference
CWE-611
EPSS
Base Score:
0.14