---
id: CVE-2025-27511
aliases:
  - GHSA-g628-r368-6vh7
title: >-
  GeoServer DB2 DataStore Extension has a JNDI Vulnerability via Store
  Connection
summary: >-
  GeoServer DB2 DataStore Extension has a JNDI Vulnerability via Store
  Connection
severity: high
cvss: 7.2
cwe:
  - CWE-74
  - CWE-502
vendor: geoserver
product: 'org.geoserver.extension:gs-db2'
ecosystem: maven
affected:
  - 'org.geoserver.extension:gs-db2 < 2.27.0'
patched:
  - 'org.geoserver.extension:gs-db2 2.27.0'
published: '2026-06-11'
updated: '2026-06-11'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-g628-r368-6vh7'
references:
  - url: >-
      https://github.com/geoserver/geoserver/security/advisories/GHSA-g628-r368-6vh7
  - url: 'https://github.com/geoserver/geoserver/releases/tag/2.27.0'
  - url: 'https://github.com/advisories/GHSA-g628-r368-6vh7'
tags:
  - ghsa
  - maven
epss: 0.01074
epssPercentile: 0.63492
ingestedAt: '2026-07-07T15:41:59.279Z'
---

## Overview

## Summary

Administrator can perform JNDI attack through specially crafted DB2 jdbc url leading to Remote Code Execution (RCE).

## Impact

If GeoServer has DB2 extension installed, this vulnerability can lead to executing arbitrary code.

## Details

Authenticated users can access Vector Data Sources page to creating a new data store through db2 jdbc connection, performing JNDI attack due to unrestricted connection parameters, and then achieve RCE with deserialization of untrusted data.

### Remediation

This issue has been fixed in this release: https://github.com/geoserver/geoserver/releases/tag/2.27.0.

## References

* https://osgeo-org.atlassian.net/browse/GEOT-7725
* https://nvd.nist.gov/vuln/detail/cve-2023-27867

## Affected packages

- `org.geoserver.extension:gs-db2 < 2.27.0`

## Remediation

Upgrade to a patched release:

- `org.geoserver.extension:gs-db2 2.27.0`