Vulnerability Report

CVE-2025-21621

Title: Reflected XSS in GeoServer WMS GetFeatureInfo HTML output

XSS

Proof Of Concept

No public PoC currently indexed for CVE-2025-21621.

CWE Category CWE-79
Published Date Nov 25, 2025
Modified Date Dec 03, 2025
Exploit Status Not Found
Score 6.1 CVSS v3.1
Exploit Probability (EPSS)
0.03%

Vulnerability Summary

CVE-2025-21621: 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.

Impacted Vendors

G
geoserver 1

Reference Links

https://github.com/geoserver/geoserver/commit/dc9ff1c726dd73c884437a123b4ad72b19383c7d https://github.com/geoserver/geoserver/pull/7406 https://github.com/geoserver/geoserver/security/advisories/GHSA-w66h-j855-qr72 https://osgeo-org.atlassian.net/browse/GEOS-11297
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
6.1
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2025-21621 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

MODIFIED

Vulnerability data updated via NVD.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected Stack

No specific products linked.