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CVE-2026-55864

GeoNetwork: Unauthenticaded Server-Side Request Forgery in SLD Tool

CVSS 4.0 7.8 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-55864

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-55864

Published

core-geonetwork

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "geonetwork",
                    "product": "core-geonetwork",
                    "versions": [
                        {
                            "version": ">= 4.0.0, < 4.2.17",
                            "status": "affected"
                        },
                        {
                            "version": ">= 4.4.0, < 4.4.12",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON