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TI-2025-20337 Aliases CVE-2025-27505GHSA-h86g-x8mm-78m5

GeoServer Missing Authorization on REST API Index

Priority LOW 32CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-862.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01165 67th percentileScored 2026-11-07
Fix Fixed geoserver (geoserver): 2.26.3, 2.25.6org.geoserver.web:gs-web-app (Maven): 2.26.3, 2.25.6+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
geoservergeoserver2.26.0 to before 2.26.3; before 2.25.62.26.3, 2.25.6Patch availableCNA
—org.geoserver.web:gs-web-app (Maven)2.26.0 to before 2.26.32.26.3Patch availableGHSA-h86g-x8mm-78m5
—org.geoserver.web:gs-web-app (Maven)before 2.25.62.25.6Patch availableGHSA-h86g-x8mm-78m5
—org.geoserver:gs-rest (Maven)2.26.0 to before 2.26.32.26.3Patch availableGHSA-h86g-x8mm-78m5
—org.geoserver:gs-rest (Maven)before 2.25.62.25.6Patch availableGHSA-h86g-x8mm-78m5
  • geoserver Vendorgeoserver Affected 2.26.0 to before 2.26.3; before 2.25.6 Fixed in 2.26.3, 2.25.6 Patch available CNA
  • org.geoserver.web:gs-web-app (Maven) Vendor— Affected 2.26.0 to before 2.26.3 Fixed in 2.26.3 Patch available GHSA-h86g-x8mm-78m5
  • org.geoserver.web:gs-web-app (Maven) Vendor— Affected before 2.25.6 Fixed in 2.25.6 Patch available GHSA-h86g-x8mm-78m5
  • org.geoserver:gs-rest (Maven) Vendor— Affected 2.26.0 to before 2.26.3 Fixed in 2.26.3 Patch available GHSA-h86g-x8mm-78m5
  • org.geoserver:gs-rest (Maven) Vendor— Affected before 2.25.6 Fixed in 2.25.6 Patch available GHSA-h86g-x8mm-78m5

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:osgeo:geoserver:*:*:*:*:*:*:*:*before 2.25.6; 2.26.0 to before 2.26.3VulnerableOSGeo
  • cpe:2.3:a:osgeo:geoserver:*:*:*:*:*:*:*:* Versions before 2.25.6; 2.26.0 to before 2.26.3 Vulnerable ·OSGeo

Remediation

  • Fix · CNA geoserver (geoserver) Fixed in 2.26.3, 2.25.6
  • Fix · GHSA-h86g-x8mm-78m5 org.geoserver.web:gs-web-app (Maven) Fixed in 2.26.3 Advisory →
  • Fix · GHSA-h86g-x8mm-78m5 org.geoserver.web:gs-web-app (Maven) Fixed in 2.25.6 Advisory →
  • Fix · GHSA-h86g-x8mm-78m5 org.geoserver:gs-rest (Maven) Fixed in 2.26.3 Advisory →
  • Fix · GHSA-h86g-x8mm-78m5 org.geoserver:gs-rest (Maven) Fixed in 2.25.6 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-27505
  2. 2026-10-03 Alias added: GHSA-h86g-x8mm-78m5

References

Patch 2

Advisory 2

Other 2

  • TI-2024-24187 Remote Code Execution (RCE) vulnerability in evaluating property name expressions in Geoserver KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-36149 GeoServer is vulnerable to an Unauthenticated XML External Entities (XXE) attack via WMS GetMap feature KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-10619 Unfiltered SQL Injection Vulnerabilities in Geoserver CVSS 3.1CRITICAL 9.8
  • TI-2023-23486 WPS Server Side Request Forgery in GeoServer CVSS 3.1CRITICAL 9.8
  • TI-2023-17518 GeoServer 2, in some configurations, allows remote attackers to execute arbitrary code… CVSS 3.1CRITICAL 9.8
  • TI-2025-21556 GeoTools, GeoServer, and GeoNetwork XML External Entity (XXE) Processing Vulnerability in XSD schema handling CVSS 3.1CRITICAL 9.9
See all 33 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences