Description
GeoServer is an open source server that allows users to share and edit geospatial data. It is possible to bypass the default REST API security and access the index page. The REST API security handles rest and its subpaths but not rest with an extension (e.g., rest.html). The REST API index can disclose whether certain extensions are installed. This vulnerability is fixed in 2.26.3 and 2.25.6. As a workaround, in ${GEOSERVER_DATA_DIR}/security/config.xml, change the paths for the rest filter to /rest.*,/rest/** and change the paths for the gwc filter to /gwc/rest.*,/gwc/rest/** and restart GeoServer.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| geoserver | geoserver | >= 2.26.0, < 2.26.3, < 2.25.6 | — |
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- GeoServer - Missing Authorization on REST API Index http/cves/2025/CVE-2025-27505.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.geoserver:gs-rest | >= 2.26.0, < 2.26.3 | 2.26.3 | GHSA-h86g-x8mm-78m5 |
| Maven | org.geoserver:gs-rest | < 2.25.6 | 2.25.6 | GHSA-h86g-x8mm-78m5 |
| Maven | org.geoserver.web:gs-web-app | >= 2.26.0, < 2.26.3 | 2.26.3 | GHSA-h86g-x8mm-78m5 |
| Maven | org.geoserver.web:gs-web-app | < 2.25.6 | 2.25.6 | GHSA-h86g-x8mm-78m5 |
Advisories 1
- WID-SEC-2025-1267 GeoServer: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 9, 2025