CVE-2025-58360
OSGeo GeoServer Improper Restriction of XML External Entity Reference Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 1 January 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 61.17% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 11 December 2025 · due 1 January 2026
- Weakness
- CWE-611
- Affected
- geoserver/geoserver
- Source
- security-advisories@github.com
EPSS moved from 60.5% on 24 September 2026 to 61.2% on 30 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. This vulnerability affects an open-source component, third-party library, or a protocol used by different products. For more information, please see: https://github.com/geoserver/geoserver/security/advisories/GHSA-fjf5-xgmq-5525 ; https://osgeo-org.atlassian.net/browse/GEOS-11922 ; https://nvd.nist.gov/vuln/detail/CVE-2025-58360
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.