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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
NVD MITRE
6.1CVSSMEDIUM
EPSS Score
0.2%
Top 84.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:CC:LI:LA:N
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

org.geoserver.web:gs-web-appMavenOSS Libraries
org.geoserver:gs-wmsMavenOSS Libraries
GeoServerOpen Source Geospatial Foundation (OSGeo)
On-prem
OSS Libraries / generic-library
geoservergeoserver
On-prem
Web & CMS Plugins / cms-core
mavenpackage-ecosystemOSS Libraries
open source geospatial foundation (osgeo)oss-projectOSS Librariesaka osgeo
geoserveross-projectWeb & CMS Pluginsaka geoserver, geowebcache

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/geoserver/geoserver/security/advisories/GHSA-w66h-j855-qr72
github.com
https://nvd.nist.gov/vuln/detail/CVE-2025-21621
nvd.nist.gov
https://github.com/geoserver/geoserver/pull/7406
github.com
and 7 more references View all →

Timeline

Published
Nov 25, 2025
Last Updated
Dec 3, 2025

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