CVE-2026-58400
GeoNetwork vulnerable to Remote Code Execution via unsafe Saxon XSLT processor configuration in formatter
- State
- Published
- Severity
- 9.1 Critical
- Published
- Sep 3, 2026
- Updated
- Sep 4, 2026
- Reserved
- Jun 30, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.1 Critical | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
core-geonetworkgeonetwork |
|
References
- https://github.com/geonetwork/core-geonetwork/security/advisories/GHSA-x898-729x-cc3r
- https://docs.geonetwork-opensource.org/4.2/overview/change-log/version-4.2.17
- https://docs.geonetwork-opensource.org/4.4/overview/change-log/version-4.4.12
- https://thehackernews.com/2026/09/geonetwork-fixes-unauthenticated-rce.html
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