CVE-2025-27511

High

Description

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.

SeverityHigh

CVSS7.2

Exploit probability—

ProductOsgeo Geoserver

PublishedJun 18, 2026

First seenJun 18, 2026

Weakness typeCWE-502Deserialization of untrusted data CWE-74Injection

How to fix

Update

osgeo geoserver2.27.0 or later
org.geoserver.extension:gs-db22.27.0 or later

Affected products

Product	Affected versions	Fixed in
osgeo geoserver	v < 2.27.0	2.27.0
org.geoserver.extension:gs-db2Maven	v < 2.27.0	2.27.0

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