SEPTEMBER 16, 2026
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Case File

CVE-2026-55864

HIGH · CVSS 7.8 EPSS 0.59% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-15 · Last synced 2026-09-16

CyberRota Analysis

AI-Generated

GeoNetwork versions prior to 4.2.17 and 4.4.12 are vulnerable due to improper validation of caller-supplied WMS server URLs in the POST /api/tools/ogc/sld endpoint, allowing an anonymous attacker to perform server-side requests to internal hosts. This could lead to unauthorized data disclosure, authorization bypass, and network reconnaissance, posing a significant risk to organizations using affected versions. Users of GeoNetwork should prioritize upgrading to the patched versions to mitigate these vulnerabilities.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-55864
Severity
HIGH
CVSS
7.8
EPSS
0.59%

Original NVD Description

GeoNetwork is a catalog application to manage spatially referenced resources. Prior to 4.2.17 and 4.4.12, POST /api/tools/ogc/sld accepted a caller-supplied WMS server URL and performed a server-side HTTP GET without destination validation. An anonymous attacker could make the GeoNetwork server send requests to internal hosts that are not publicly reachable. When the outbound response was XML, the endpoint could store and return the fetched body, making the request forgery non-blind and enabling internal data disclosure, authorization bypass, and network reconnaissance. This issue is fixed in versions 4.2.17 and 4.4.12.