CVE-2026-63219 Unauthenticated file upload via missing authorization on formatter upload endpoint
Unauthenticated attackers can upload arbitrary files to the GeoNetwork formatter directory due to missing authorization on the upload endpoint.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-63219?
CVE-2026-63219 is a high-severity missing authorization vulnerability in core-geonetwork, published on 3 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-63219?
How do I fix CVE-2026-63219?
No fix has been published for CVE-2026-63219 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-63219 being exploited?
There is no known exploitation of CVE-2026-63219 in the wild and no public exploit code.
Sources
Also known as GHSA-mh22-prqr-vf42.