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Vulnerabilities

Vulnerability · CVE-2026-58400

OSGeo geonetwork Improper Control of Generation of Code ('Code Injection')

Published Sep 3, 2026 · catalog updated Sep 3, 2026 · Geonetwork Core-Geonetwork

Patch now

CVE-2026-58400 is in the CISA known-exploited catalog. Confirm Geonetwork Core-Geonetwork against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
1.19%
Remediation
Remediation guidance
Affected products
vendor Geonetwork Core-Geonetwork

GeoNetwork is a catalog application to manage spatially referenced resources. Prior to versions 4.4.12 and 4.2.17, the Saxon XSLT processor used to render formatters is configured without secure processing ( ) and without disabling Java extension functions ( ). Any stylesheet loaded by GeoNetwork can therefore invoke or directly, achieving arbitrary command execution as the GeoNetwork process user. A user with sufficient privileges to upload a formatter can deliver a file containing Java extension call that execute arbitrary OS commands with the privileges of the GeoNetwork process. The issue

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Geonetwork Core-Geonetworkversion unspecified

How to fix CVE-2026-58400

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2026-58400 is in the CISA known-exploited catalog. Confirm Geonetwork Core-Geonetwork against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 1.19%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 3, 2026 · VulnCheck KEV

    Detected

    GeoNetwork is a catalog application to manage spatially referenced resources. Prior to versions 4.4.12 and 4.2.17, the Saxon XSLT processor used to render formatters is configured without secure processing ( ) and without disabling Java extension functions ( ). Any stylesheet loaded by GeoNetwork can therefore invoke or directly, achieving arbitrary command execution as the GeoNetwork process user

  2. Sep 3, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2026-58400

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-58400

    30-day exploitation probability 1.2%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2026-58400

    GeoNetwork is a catalog application to manage spatially referenced resources. Prior to versions 4.4.12 and 4.2.17, the Saxon XSLT processor used to render formatters is configured without secure processing ( ) and without disabling Java extension functions ( ). Any stylesheet loa

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.