GeoNetwork Web Module: Unauthenticaded Server-Side Request Forgery in SLD Tool
Summary
An unauthenticated server-side request forgery vulnerability lets any anonymous user make the GeoNetwork server issue arbitrary outbound HTTP requests. This gives an external attacker a position inside the server's network, making it possible to make internal requests no matter if the response is XML-type or not.
The SLD tooling endpoint POST /api/tools/ogc/sld takes a caller-supplied WMS server URL and performs a server-side HTTP GET to it, with no validation. The fetched body can also be stored and downloaded if the output of the outbound request is in XML format, making the SSRF non-blind.
Impact
Any unauthenticated user can make the server send arbitrary HTTP requests to internal hosts it would never expose publicly, and read the responses back if the request responses are XML. This enables internal data disclosure, for example, configuration files that return as XML, authorization bypass, and reconnaissance of the internal network all from an anonymous position.
Resolution
Patched releases:
- 4.4.12
- 4.2.17
Resources
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.geonetwork-opensource:gn-web-app | >= 4.4.0, < 4.4.12, >= 4.0.0, < 4.2.17 | 4.4.12, 4.2.17 |
References
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N- Weakness (CWE)
CWE-918- Platform
- Java / Kotlin (Maven)
- Package
org.geonetwork-opensource:gn-web-app- Disclosed
- 09.09.2026
- Updated
- 11.10.2026 13:19
Sources and licenses
OSV / GitHub Advisory Database - GHSA-5hx7-j24v-rffj - CC BY 4.0
Vulnerability history: org.geonetwork-opensource:gn-web-app
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 06.2025 09.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 2
Disclosures per year
- 2025: 1
- 2026: 1
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GeoNetwork Web Module: Unauthenticaded Server-Side Request Forgery in SLD Tool this entry
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