TI-2025-15581 Aliases CVE-2025-21621 GHSA-w66h-j855-qr72

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

LOW 27CWE-79Published 2025-11-25 · Updated 2025-11-26

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00317 24th percentileScored 2026-11-07

Fix Fixed geoserver (geoserver): 2.25.0org.geoserver.web:gs-web-app (Maven): 2.25.0+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
geoserver	geoserver	before 2.25.0	2.25.0	Patch available	CNA
—	org.geoserver.web:gs-web-app (Maven)	before 2.25.0	2.25.0	Patch available	GHSA-w66h-j855-qr72
—	org.geoserver:gs-wms (Maven)	before 2.25.0	2.25.0	Patch available	GHSA-w66h-j855-qr72

geoserver Vendorgeoserver Affected before 2.25.0 Fixed in 2.25.0 Patch available CNA
org.geoserver.web:gs-web-app (Maven) Vendor— Affected before 2.25.0 Fixed in 2.25.0 Patch available GHSA-w66h-j855-qr72
org.geoserver:gs-wms (Maven) Vendor— Affected before 2.25.0 Fixed in 2.25.0 Patch available GHSA-w66h-j855-qr72

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:geoserver:geoserver::::::::	before 2.25.0	Vulnerable	geoserver

cpe:2.3:a:geoserver:geoserver:*:*:*:*:*:*:*:* Versions before 2.25.0 Vulnerable ·geoserver

Remediation

Fix · CNA geoserver (geoserver) Fixed in 2.25.0
Fix · GHSA-w66h-j855-qr72 org.geoserver.web:gs-web-app (Maven) Fixed in 2.25.0 Advisory →
Fix · GHSA-w66h-j855-qr72 org.geoserver:gs-wms (Maven) Fixed in 2.25.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2025-21621
2026-10-03 Alias added: GHSA-w66h-j855-qr72

References

Patch 1

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

Advisory 2

Other 4

TI-2024-24187 Remote Code Execution (RCE) vulnerability in evaluating property name expressions in Geoserver KEVCVSS 3.1CRITICAL 9.8
TI-2025-36149 GeoServer is vulnerable to an Unauthenticated XML External Entities (XXE) attack via WMS GetMap feature KEVCVSS 3.1CRITICAL 9.8
TI-2023-17518 GeoServer 2, in some configurations, allows remote attackers to execute arbitrary code… CVSS 3.1CRITICAL 9.8
TI-2023-28098 GeoServer arbitrary file upload vulnerability in REST Coverage Store API CVSS 3.1HIGH 7.2
TI-2024-15662 GeoServer Stored Cross-Site Scripting (XSS) vulnerability in GWC Seed Form CVSS 3.1MEDIUM 4.8
TI-2023-28099 GeoServer Stored Cross-Site Scripting (XSS) vulnerability in REST Resources API CVSS 3.1MEDIUM 4.8

See all 16 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences