CVE-2025-21621: geoserver before 2.25.0 (exclusive), < 2.25.0

CVE-2025-21621. CVSS 3.1 base score 6.1 (MEDIUM, Vendor/CNA). EPSS 0.00296 (percentile 0.20825), scored 17-Oct-2026.

Affected technology

geoserver · before 2.25.0 (exclusive)
geoserver

geoserver · < 2.25.0
geoserver

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · User interaction required

What an attacker can do

A remote attacker can execute arbitrary JavaScript code in a victim's browser through specially crafted SLD_BODY parameters. Vendor/CNA’s CVSS 3.1 assessment (base score 6.1/10) rates confidentiality and integrity impact as low; availability impact as none.

Published 18-Oct-2026 20:24 UTC

CWE: CWE-79
CCR priority: 24.5 /100 (P4)
CVSS 3.1: 6.1 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N · Vendor/CNA
EPSS: 0.00296 · percentile 0.20825 · 2026-10-17
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-18 20:23:06.032219+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-21621.html