---
id: CVE-2025-58175
aliases:
  - GHSA-x4r9-gmw3-hxww
title: >-
  GeoServer has a Server-Side Request Forgery (SSRF) Vulnerability in its XML
  Entity Resolution
summary: >-
  GeoServer has a Server-Side Request Forgery (SSRF) Vulnerability in its XML
  Entity Resolution
severity: medium
cvss: 6.5
cwe:
  - CWE-20
  - CWE-611
  - CWE-918
vendor: geoserver
product: 'org.geoserver.web:gs-web-app'
ecosystem: maven
affected:
  - 'org.geoserver.web:gs-web-app <= 2.26.3'
  - 'org.geoserver:gs-main <= 2.26.3'
  - 'org.geoserver:gs-main >= 2.27.0, <= 2.27.2'
  - 'org.geoserver.web:gs-web-app >= 2.27.0, <= 2.27.2'
patched:
  - 'org.geoserver.web:gs-web-app 2.26.4'
  - 'org.geoserver:gs-main 2.26.4'
  - 'org.geoserver:gs-main 2.27.3'
  - 'org.geoserver.web:gs-web-app 2.27.3'
published: '2026-06-12'
updated: '2026-06-12'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-x4r9-gmw3-hxww'
references:
  - url: >-
      https://github.com/geoserver/geoserver/security/advisories/GHSA-x4r9-gmw3-hxww
  - url: 'https://github.com/geoserver/geoserver/pull/8622'
  - url: 'https://github.com/advisories/GHSA-x4r9-gmw3-hxww'
tags:
  - ghsa
  - maven
epss: 0.00471
epssPercentile: 0.38096
ingestedAt: '2026-07-07T15:41:59.248Z'
---

## Overview

### Summary
A GeoServer that uses `ENTITY_RESOLUTION_ALLOWLIST` may allow attacker to perform unauthenticated Server-Side Request Forgery (SSRF).

### Details
This vulnerability requires that GeoServer is set up to use a proxy base URL and the `ENTITY_RESOLUTION_ALLOWLIST` (default since 2.25.0):

### Impact
This vulnerability allows an attacker to cause GeoServer to make requests to an unintended location.

### Workaround
GeoServer installations are only affected by this vulnerability if they use a proxy base URL that does not contain a URL path or end with a slash (e.g., `https://somesite.org` instead of `https://somesite.org/` or `https://somesite.org/geoserver`). If the proxy base URL does not contain a path, adding a slash to the end of the URL will mitigate this vulnerability.

### Resources
https://osgeo-org.atlassian.net/browse/GEOS-11867
https://github.com/geoserver/geoserver/pull/8622

### Credits:
-  Le Mau Anh Phong at Verichains Cyber Force

## Affected packages

- `org.geoserver.web:gs-web-app <= 2.26.3`
- `org.geoserver:gs-main <= 2.26.3`
- `org.geoserver:gs-main >= 2.27.0, <= 2.27.2`
- `org.geoserver.web:gs-web-app >= 2.27.0, <= 2.27.2`

## Remediation

Upgrade to a patched release:

- `org.geoserver.web:gs-web-app 2.26.4`
- `org.geoserver:gs-main 2.26.4`
- `org.geoserver:gs-main 2.27.3`
- `org.geoserver.web:gs-web-app 2.27.3`