CVE-2025-27511: OSGeo GeoServer

High severity, CVSS 7.2. EPSS: 1.1% chance of exploitation in the next 30 days.

GeoServer is an open source server that allows users to share and edit geospatial data. Prior to version 2.27.0 of the GeoServer DB2 DataStore Extension, an administrator can perform a JNDI attack through specially crafted DB2 jdbc url leading to to Remote Code Execution (RCE). Version 2.27.0 fixes the issue.

Affected products

• OSGeo GeoServer: before 2.27.0 (fixed in 2.27.0)

Published 2026-06-18. Last modified 2026-10-06.