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

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Summary

CVECVE-2025-58175
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-18 16:16:52 UTC
Updated2026-06-18 18:04:59 UTC
DescriptionGeoServer is an open source server that allows users to share and edit geospatial data. Prior to versions 2.26.4 and 2.27.3, a GeoServer that uses `ENTITY_RESOLUTION_ALLOWLIST` may allow attacker to perform unauthenticated Server-Side Request Forgery (SSRF). This vulnerability requires that GeoServer is set up to use a proxy base URL and the `ENTITY_RESOLUTION_ALLOWLIST` (default since 2.25.0). Versions 2.26.4 and 2.27.3 contain a fix. 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. If the proxy base URL does not contain a path, adding a slash to the end of the URL will mitigate this vulnerability.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

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

Problem Types: CWE-20 | CWE-611 | CWE-918 | CWE-20 CWE-20: Improper Input Validation | CWE-611 CWE-611: Improper Restriction of XML External Entity Reference | CWE-918 CWE-918: Server-Side Request Forgery (SSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L
3.1CNADECLARED6.5MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
Low

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Geoserver Org.geoserver.webgs-web-app affected < 2.26.4 Not specified
CNA Geoserver Org.geoserver.webgs-web-app affected >= 2.27.0, < 2.27.3 Not specified
CNA Geoserver Org.geoservergs-main affected < 2.26.4 Not specified
CNA Geoserver Org.geoservergs-main affected >= 2.27.0, < 2.27.3 Not specified

References

ReferenceSourceLinkTags
osgeo-org.atlassian.net/browse/GEOS-11867 [email protected] osgeo-org.atlassian.net
github.com/geoserver/geoserver/security/advisories/GHSA-x4r9-gmw3-hxww [email protected] github.com
github.com/geoserver/geoserver/pull/8622 [email protected] github.com
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