CVE-2026-55864

UNKNOWN 0.0

GeoNetwork: Unauthenticaded Server-Side Request Forgery in SLD Tool

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918
Vendor	geonetwork
Product	core-geonetwork
Published	Sep 15, 2026

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Affected Versions

geonetwork / core-geonetwork

>= 4.0.0, < 4.2.17 >= 4.4.0, < 4.4.12

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/geonetwork/core-geonetwork/security/advisories/GHSA-5hx7-j24v-rffj github.com: https://github.com/geonetwork/core-geonetwork/pull/9343 github.com: https://github.com/geonetwork/core-geonetwork/pull/9344 github.com: https://github.com/geonetwork/core-geonetwork/commit/17fdae28a5a51996bf5ff7f7e8236332c74eab77 github.com: https://github.com/geonetwork/core-geonetwork/commit/a80d535c842e6af589d0bac37e7fe4ba01193757 github.com: https://github.com/geonetwork/core-geonetwork/releases/tag/4.2.17 github.com: https://github.com/geonetwork/core-geonetwork/releases/tag/4.4.12