CVE-2026-58400criticalobserved exploitationCWE-470CWE-94

CVE-2026-58400: critical vulnerability in geonetwork core-geonetwork

GeoNetwork vulnerable to Remote Code Execution via unsafe Saxon XSLT processor configuration in formatter

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50Vexday Risk Score

Prioritize patching. It exploitation observed by VulnCheck.

ssvc Actcvss 9.1epss 1.2%
from disclosure to weapon
Published on NVDSep 3
VulnCheckSep 3
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 (`FEATURE_SECURE_PROCESSING`) and without disabling Java extension functions (`ALLOW_EXTERNAL_FUNCTIONS`). Any stylesheet loaded by GeoNetwork can therefore invoke `java.lang.Runtime.exec()` or `java.lang.ProcessBuilder` directly, achieving arbitrary command execution as the GeoNetwork process user. A user with sufficient privileges to upload a formatter can deliver a `.xsl` file containing Java extension call that execute arbitrary OS commands with the privileges of the GeoNetwork process. The issue is patched in GeoNetwork versions 4.4.12 and 4.2.17.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected products
geonetwork · core-geonetwork
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