CVE-2026-22186
HIGHOpen Microscopy Environment/Bio-Formats <= 8.3.0 - XML External Entity Injection in Leica XLEF Metadata Parser
Title source: llmDescription
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.
References (4)
Core 4
Core References
Vendor Advisory vendor-advisory
patch
https://github.com/ome/bioformats/security/advisories/GHSA-x9vc-qh97-8gjp
Various Sources product
release-notes
https://docs.openmicroscopy.org/bio-formats/
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/bio-formats-xxe-in-leica-xlef-metadata-parser
Mailing List technical-description
exploit
https://seclists.org/fulldisclosure/2026/Jan/6
Scores
CVSS v3
7.1
EPSS
0.0014
EPSS Percentile
3.8%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-611
Status
published
Products (3)
ome/pom-bio-formats
0Maven
Open Microscopy Environment/Bio-Formats
< 8.3.0
openmicroscopy/bio-formats
< 8.3.0
Published
Jan 07, 2026
Tracked Since
Feb 18, 2026