CVE-2025-21621

GeoServer Reflected Cross-Site Scripting (XSS) vulnerability in WMS GetFeatureInfo HTML format

Published: Nov 25, 2025Updated: Dec 3, 2025 Sources: CVE List NVD GHSA BDUCWE-79

6.1MEDIUM

Description

GeoServer is an open source server that allows users to share and edit geospatial data. Prior to version 2.25.0, a reflected cross-site scripting (XSS) vulnerability exists in the WMS GetFeatureInfo HTML output format that enables a remote attacker to execute arbitrary JavaScript code in a victim's browser through specially crafted SLD_BODY parameters. This issue has been patched in version 2.25.0.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:RUser Interaction

Required

Scope

S:CScope

Changed

Impact

C:LConfidentiality

Low

I:LIntegrity

Low

A:NAvailability

None

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Weaknesses

CWE-79

Affected Products

Maven

package-ecosystem

org.geoserver.web:gs-web-app

oss-projectaka geowebcache

geoserverOn-prem

Web & CMS Plugins / cms-core

Open Source Geospatial Foundation (OSGeo)

oss-projectaka osgeo

GeoServerOn-prem

OSS Libraries / generic-library

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Execution

Initial Access

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References

https://github.com/geoserver/geoserver/commit/dc9ff1c726dd73c884437a123b4ad72b19383c7d

github.com

https://github.com/geoserver/geoserver/pull/7406

github.com

https://github.com/geoserver/geoserver/security/advisories/GHSA-w66h-j855-qr72

github.com

and 7 more references View all →

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