{"cve":"CVE-2026-22186","nvd":{"published":"2026-01-07T21:16:02.433","modified":"2026-10-08T16:17:10.947","status":"Modified","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.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N","score":4.6},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","score":7.1},"cwes":["CWE-611"],"references":["https://docs.openmicroscopy.org/bio-formats/","https://github.com/ome/bioformats/security/advisories/GHSA-x9vc-qh97-8gjp","https://seclists.org/fulldisclosure/2026/Jan/6","https://www.vulncheck.com/advisories/bio-formats-xxe-in-leica-xlef-metadata-parser"],"products":["openmicroscopy:bio-formats"],"source":"nvd","synced_at":"2026-10-19T22:19:41.481987139+00:00"},"epss":{"cve":"CVE-2026-22186","score":0.00173,"percentile":0.06663,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-fcqj-76g3-q7qm","url":"https://osv.dev/vulnerability/GHSA-fcqj-76g3-q7qm","summary":"Bio-Formats has an XML External Entity (XXE) vulnerability","modified":"2026-04-02T13:26:22.436752571Z","packages":[{"ecosystem":"Maven","name":"ome:pom-bio-formats","purl":"pkg:maven/ome/pom-bio-formats","ranges":["<=8.3.0"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}