CVE Tools
Sign in

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
NVD MITRE
EPSS Score
0.3%
Top 78.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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

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
Open in CVSS calculator →

Weaknesses

CWE-79

Affected Products

Maven
package-ecosystem
org.geoserver.web:gs-web-app
OSS Libraries
org.geoserver:gs-wms
OSS Libraries
geoserver
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
Is your org exposed to CVE-2025-21621?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

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 →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2025-21621 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows