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

Description

GeoServer 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.

Scores

EPSS (exploitation in 30 days)

0.29% · top 79% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.

Weakness

• CWE-20: Improper Input Validation (opens in a new tab)All about CWE-20 and its CVEs
• CWE-611: Improper Restriction of XML External Entity Reference (opens in a new tab)All about CWE-611 and its CVEs
• CWE-918: Server-Side Request Forgery (SSRF) (opens in a new tab)All about CWE-918 and its CVEs

Affected products

• geoserver · org.geoserver.web:gs-web-app

  • affected < 2.26.4
  • affected >= 2.27.0, < 2.27.3

• geoserver · org.geoserver:gs-main

  • affected < 2.26.4
  • affected >= 2.27.0, < 2.27.3

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• Mavenorg.geoserver.web:gs-web-appGHSA-x4r9-gmw3-hxww (opens in a new tab)
• Mavenorg.geoserver:gs-mainGHSA-x4r9-gmw3-hxww (opens in a new tab)

References (3)

• https://github.com/geoserver/geoserver/security/advisories/GHSA-x4r9-gmw3-hxww (opens in a new tab)x_refsource_CONFIRM
• https://github.com/geoserver/geoserver/pull/8622 (opens in a new tab)x_refsource_MISC
• https://osgeo-org.atlassian.net/browse/GEOS-11867 (opens in a new tab)x_refsource_MISC

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-x4r9-gmw3-hxww (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2025-58175](https://trackcve.app/badge/CVE-2025-58175.svg)](https://trackcve.app/cve/CVE-2025-58175)

Record last updated 18 Jun 2026, 15:26 UTC.