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CVE-2023-43795

WPS Server Side Request Forgery in GeoServer

8.6 HighFix available

GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. The OGC Web Processing Service (WPS) specification is designed to process information from any server using GET and POST requests. This presents the opportunity for Server Side Request Forgery. This vulnerability has been patched in version 2.22.5 and 2.23.2.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
Low
Availability
Low

Exploit likelihood

69.0%Up 69.0 points since Oct 25, 2023
90%50%10%1%

What each source reports

CVE List Score used 8.6

WPS Server Side Request Forgery in GeoServer

GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. The OGC Web Processing Service (WPS) specification is designed to process information from any server using GET and POST requests. This presents the opportunity for Server Side Request Forgery. This vulnerability has been patched in version 2.22.5 and 2.23.2.

Record
CVE-2023-43795
CVSS 3.1
8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Weakness
CWE-918
Updated
2026-11-02
EUVDEUVD-2023-2659 8.6

GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. The OGC Web Processing Service (WPS) specification is designed to process information from any server using GET and POST requests. This presents the opportunity for Server Side Request Forgery. This vulnerability has been patched in version 2.22.5 and 2.23.2.

Record
EUVD-2023-2659
CVSS 3.1
8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Updated
2026-11-03
GitHub AdvisoriesGHSA-5pr3-m5hm-9956 8.6

WPS Server Side Request Forgery vulnerability

Summary

The OGC Web Processing Service (WPS) specification is designed to process information from any server using GET and POST requests.

This presents the opportunity for Server Side Request Forgery.

Details

This vulnerability requires:

  • The WPS extension to be installed
  • The WPS security setting "Disable complex inputs" to be unselected
  • Security URL checks to be disabled

Impact

This vulnerability presents the opportunity for Server Side Request Forgery.

Mitigation

The ability to reference an external URL location is defined by the WPS standard Execute operation. This operations is defined by an Industry and International standard and cannot be redefined by the GeoServer application in isolation.

To disable complex remote inputs on GeoServer 2.20.5 and GeoServer 2.21.0:

  1. Navigate to Security > WPS Security page
  2. Locate Complex Inputs heading
  3. Select the check box for Disable loading complex inputs from remote references

Resolution

To allow processing of complex inputs safely in GeoServer 2.22.5 and GeoServer 2.23.2:

  1. Navigate to Security > URL Checks
  2. Enable URL Checks are enabled setting
  3. Check the user manual for examples of how to trust specific locations for your external services.

Processing of complex inputs safely is on by default in GeoServer 2.24.0.

References

Record
GHSA-5pr3-m5hm-9956
CVSS 3.1
8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Weakness
CWE-918
Updated
2026-11-02
NVD 8.6

GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. The OGC Web Processing Service (WPS) specification is designed to process information from any server using GET and POST requests. This presents the opportunity for Server Side Request Forgery. This vulnerability has been patched in version 2.22.5 and 2.23.2.

Record
CVE-2023-43795
CVSS 3.1
8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-918
Updated
2026-11-02
OSV 8.6

WPS Server Side Request Forgery in GeoServer

GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. The OGC Web Processing Service (WPS) specification is designed to process information from any server using GET and POST requests. This presents the opportunity for Server Side Request Forgery. This vulnerability has been patched in version 2.22.5 and 2.23.2.

Record
CVE-2023-43795
CVSS 3.1
8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Weakness
CWE-918
Updated
2026-11-02
OSVGHSA-5pr3-m5hm-9956 8.6

WPS Server Side Request Forgery vulnerability

Summary

The OGC Web Processing Service (WPS) specification is designed to process information from any server using GET and POST requests.

This presents the opportunity for Server Side Request Forgery.

Details

This vulnerability requires:

  • The WPS extension to be installed
  • The WPS security setting "Disable complex inputs" to be unselected
  • Security URL checks to be disabled

Impact

This vulnerability presents the opportunity for Server Side Request Forgery.

Mitigation

The ability to reference an external URL location is defined by the WPS standard Execute operation. This operations is defined by an Industry and International standard and cannot be redefined by the GeoServer application in isolation.

To disable complex remote inputs on GeoServer 2.20.5 and GeoServer 2.21.0:

  1. Navigate to Security > WPS Security page
  2. Locate Complex Inputs heading
  3. Select the check box for Disable loading complex inputs from remote references

Resolution

To allow processing of complex inputs safely in GeoServer 2.22.5 and GeoServer 2.23.2:

  1. Navigate to Security > URL Checks
  2. Enable URL Checks are enabled setting
  3. Check the user manual for examples of how to trust specific locations for your external services.

Processing of complex inputs safely is on by default in GeoServer 2.24.0.

References

Record
GHSA-5pr3-m5hm-9956
CVSS 3.1
8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Weakness
CWE-918
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
org.geoserver.extension:gs-wps-core
Maven
 before 2.22.5
2.22.5
org.geoserver.extension:gs-wps-core
Maven
 2.23.0 up to 2.23.2
2.23.2

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
NucleiGeoServer WPS - Server Side Request Forgery

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, Nuclei, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-43795 is a high vulnerability (CVSS 8.6) in Geoserver, published October 24, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 69.0%, the 99th percentile. Fixed in org.geoserver.extension:gs-wps-core 2.22.5.

References

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