Vulnerability-Lookup

GHSA-FCQJ-76G3-Q7QM

Vulnerability from github – Published: 2026-01-07 21:31 – Updated: 2026-01-08 17:33

Summary

Bio-Formats has an XML External Entity (XXE) vulnerability

Details

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.

Severity ?

4.6 (Medium)


                  
                    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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "ome:pom-bio-formats"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "8.3.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-22186"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-01-08T17:33:26Z",
    "nvd_published_at": "2026-01-07T21:16:02Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-fcqj-76g3-q7qm",
  "modified": "2026-01-08T17:33:26Z",
  "published": "2026-01-07T21:31:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22186"
    },
    {
      "type": "WEB",
      "url": "https://docs.openmicroscopy.org/bio-formats"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ome/bioformats"
    },
    {
      "type": "WEB",
      "url": "https://seclists.org/fulldisclosure/2026/Jan/6"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/bio-formats-xxe-in-leica-xlef-metadata-parser"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Bio-Formats has an XML External Entity (XXE) vulnerability"
}

CVE-2026-22186 (GCVE-0-2026-22186)

Vulnerability from cvelistv5 – Published: 2026-01-07 20:26 – Updated: 2026-01-07 21:17

Title

Bio-Formats <= 8.3.0 XXE in Leica XLEF Metadata Parser

Summary

Severity ?

4.6 (Medium)


                        
                          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

CWE

CWE-611 - Improper Restriction of XML External Entity Reference

Assigner

VulnCheck

References

URL

Tags

	https://seclists.org/fulldisclosure/2026/Jan/6	technical-descriptionexploit
	https://docs.openmicroscopy.org/bio-formats/	productrelease-notes
	https://www.vulncheck.com/advisories/bio-formats-…	third-party-advisory

Impacted products

	Vendor	Product	Version
	Open Microscopy Environment	Bio-Formats	Affected: 0 , ≤ 8.3.0 (semver)

Credits

Ron Edgerson

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
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                "id": "CVE-2026-22186",
                "options": [
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                  },
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                  },
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      ],
      "source": {
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-FCQJ-76G3-Q7QM

CVE-2026-22186 (GCVE-0-2026-22186)

Tags

Sightings

Nomenclature