CVE-2025-21621 - CVE House

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Status published Medium CVE-2025-21621

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

6.1 CVSS

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from geoserver

View All →

GeoServer is vulnerable to an Unauthenticated XML External Entities (XXE) attack via WMS GetMap feature

GeoServer has a Server-Side Request Forgery (SSRF) Vulnerability in its XML Entity Resolution

GeoServer has an arbitrary file write vulnerability in its Master Password Dump Page

GeoTools, GeoServer, and GeoNetwork XML External Entity (XXE) Processing Vulnerability in XSD schema handling

GeoServer has an Infinite Loop Vulnerability in Jiffle process

Affected Vendor

geoserver

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Affected Software

geoserver

Vulnerable Versions:

< 2.25.0

Timeline

Official Publish: November 25th, 2025

Last Modified: November 26th, 2025

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1189 Drive-by Compromise

T1059.007 JavaScript

T1539 Steal Web Session Cookie

T1213 Data from Information Repositories

T1567 Exfiltration Over Web Service

T1491.001 Defacement