PT-2026-2160 · Unknown+1 · Bio-Formats+1

Ron Edgerson · Published 2026-01-07 · Updated 2026-02-26 · CVE-2026-22186

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Name of the Vulnerable Software and Affected Versions Bio-Formats versions up to and including 8.3.0

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, such as 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.

Recommendations Versions prior to 8.3.0 should be used.

Exploit

Fix

DoS

XXE

Weakness Enumeration

CWE-611

Related Identifiers

CVE-2026-22186

GHSA-FCQJ-76G3-Q7QM

GHSA-X9VC-QH97-8GJP

Affected Products

Bio-Formats

Xlef

References · 10

• 🔥 https://seclists.org/fulldisclosure/2026/Jan/6 · Exploit
• https://osv.dev/vulnerability/CVE-2026-22186 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-22186 · Security Note
• https://osv.dev/vulnerability/GHSA-fcqj-76g3-q7qm · Vendor Advisory
• https://github.com/ome/bioformats/security/advisories/GHSA-x9vc-qh97-8gjp · Patch, Vendor Advisory
• https://github.com/ome/bioformats · Note
• https://vulncheck.com/advisories/bio-formats-xxe-in-leica-xlef-metadata-parser · Note
• https://t.me/cveNotify/153387 · Telegram Post
• https://docs.openmicroscopy.org/bio-formats · Note
• https://twitter.com/CVEnew/status/2009020524517839007 · Twitter Post