CVE-2025-58360: OSGeo GeoServer Improper Restriction of XML External Entity Reference Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2025-12-11. EPSS: 60.5% chance of exploitation in the next 30 days.

GeoServer is an open source server that allows users to share and edit geospatial data. From version 2.26.0 to before 2.26.2 and before 2.25.6, an XML External Entity (XXE) vulnerability was identified. The application accepts XML input through a specific endpoint /geoserver/wms operation GetMap. However, this input is not sufficiently sanitized or restricted, allowing an attacker to define external entities within the XML request. This issue has been patched in GeoServer 2.25.6, GeoServer 2.26.3, and GeoServer 2.27.0.

Affected products

• GeoServer GeoServer: before 2.25.6 (fixed in 2.25.6); from 2.26.0, before 2.26.2 (fixed in 2.26.2)

Published 2025-11-25. Last modified 2026-06-17.