Vulnerability 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.
Related Weaknesses (CWE)
References
- https://github.com/geonetwork/core-geonetwork/commit/17fdae28a5a51996bf5ff7f7e82
- https://github.com/geonetwork/core-geonetwork/commit/a80d535c842e6af589d0bac37e7
- https://github.com/geonetwork/core-geonetwork/pull/9343
- https://github.com/geonetwork/core-geonetwork/pull/9344
- https://github.com/geonetwork/core-geonetwork/releases/tag/4.2.17
- https://github.com/geonetwork/core-geonetwork/releases/tag/4.4.12
- https://github.com/geonetwork/core-geonetwork/security/advisories/GHSA-5hx7-j24v
FAQ
What is CVE-2026-55864?
CVE-2026-55864 is a documented vulnerability. 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 ...
How severe is CVE-2026-55864?
CVSS scoring is not yet available for CVE-2026-55864. Check NVD for updates.
Is there a patch for CVE-2026-55864?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.