GeoServer has a Server-Side Request Forgery (SSRF) Vulnerability in its XML Entity Resolution

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

6.5 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L

EPSS

• CVE-2025-58175: 0.29% estimated exploitation activity in the next 30 days; percentile 21.28 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary A GeoServer that uses ENTITYRESOLUTIONALLOWLIST 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 ENTITYRESOLUTIONALLOWLIST (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

Published by the source

12 Jun 2026, 18:23 UTC

Last modified by the source

12 Jun 2026, 18:23 UTC

Source last checked

26 Oct 2026, 16:46 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-x4r9-gmw3-hxww

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# Patch Next advisory brief: CVE-2025-58175

Advisory: GeoServer has a Server-Side Request Forgery (SSRF) Vulnerability in its XML Entity Resolution
IDs: CVE-2025-58175, GHSA-x4r9-gmw3-hxww
Record: https://patchnext.com/advisories/cve-2025-58175 (revision 1, source checked 26 Oct 2026, 16:46 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: org.geoserver:gs-main 2.27.3, 2.26.4; org.geoserver.web:gs-web-app 2.27.3, 2.26.4. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.geoserver:gs-main: affected <= 2.26.3; >= 2.27.0, <= 2.27.2; fixed in 2.27.3, 2.26.4
- Maven org.geoserver.web:gs-web-app: affected <= 2.26.3; >= 2.27.0, <= 2.27.2; fixed in 2.27.3, 2.26.4

## Suggested inspection (read-only)
- Maven org.geoserver:gs-main: check the installed version with your package manager.
- Maven org.geoserver.web:gs-web-app: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.geoserver:gs-main, org.geoserver.web:gs-web-app.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-x4r9-gmw3-hxww (GitHub-reviewed advisory GHSA-x4r9-gmw3-hxww lists affected ranges: Maven org.geoserver.web:gs-web-app >=0 =2.27.0 =0 =2.27.0 <=2.27.2)

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