---
id: CVE-2026-63219
title: GeoNetwork is a catalog application to manage spatially referenced resources
summary: >-
  GeoNetwork is a catalog application to manage spatially referenced resources.
  Prior to versions 4.4.12 and 4.2.17, the API endpoint for creating a new
  formatter via file upload is unprotected and allows the upload of external
  uncontrolle…
severity: high
cvss: 8.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N'
cwe:
  - CWE-862
published: '2026-09-03'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:09:13.080'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-63219'
references:
  - url: >-
      https://docs.geonetwork-opensource.org/4.2/overview/change-log/version-4.2.17
    label: security-advisories@github.com
  - url: >-
      https://docs.geonetwork-opensource.org/4.4/overview/change-log/version-4.4.12
    label: security-advisories@github.com
  - url: 'https://github.com/geonetwork/core-geonetwork/pull/9346'
    label: security-advisories@github.com
  - url: >-
      https://github.com/geonetwork/core-geonetwork/security/advisories/GHSA-mh22-prqr-vf42
    label: security-advisories@github.com
  - url: >-
      https://thehackernews.com/2026/09/geonetwork-fixes-unauthenticated-rce.html
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00466
epssPercentile: 0.37662
ingestedAt: '2026-09-09T21:22:45.565Z'
---

## Overview

GeoNetwork is a catalog application to manage spatially referenced resources. Prior to versions 4.4.12 and 4.2.17, the API endpoint for creating a new formatter via file upload is unprotected and allows the upload of external uncontrolled files. An unauthenticated attacker can upload arbitrary `.xsl` or `.zip` formatter files to the server.  An unauthenticated attacker can write arbitrary files into the GeoNetwork formatter directory. On its own this constitutes unauthorized write access to server storage. The issue is patched in GeoNetwork versions 4.4.12 and 4.2.17.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.