CVE-2026-55864 json
GeoNetwork: Unauthenticaded Server-Side Request Forgery in SLD Tool
published 2026-09-09 1 mo ago modified 2026-09-30 39 d ago also GHSA-5hx7-j24v-rffj , EUVD-2026-78675
- cvss
- 7.8
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 73%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
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.
Patch / fix
- maven org.geonetwork-opensource:gn-web-app 4.2.17, 4.4.12
- github.com/geonetwork/core-geonetwork@17fdae2 commit
- github.com/geonetwork/core-geonetwork@a80d535 commit
- github.com/geonetwork/core-geonetwork#9343 pull request
- github.com/geonetwork/core-geonetwork#9344 pull request
- github.com/geonetwork/core-geonetwork/releases/tag/4.2.17 release
- github.com/geonetwork/core-geonetwork/releases/tag/4.4.12 release
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 53 d ago
Exploit prediction
1.45% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template GeoNetwork - Server-Side Request Forgery (SSRF) nuclei detection template
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.8 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N |
| CNA | 4.0 | 7.8 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| 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 |
Affected products
- geonetwork core-geonetwork
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/geonetwork/core-geonetwork/pull/9343
web
- github.com /geonetwork/core-geonetwork/pull/9344
- github.com /geonetwork/core-geonetwork/commit/17fdae28a5a51996bf5ff7f7e8236332c74eab77
- github.com /geonetwork/core-geonetwork/commit/a80d535c842e6af589d0bac37e7fe4ba01193757
-
github.com
/geonetwork/core-geonetwork/security/advisories/GHSA-5hx7-j24v-rffj
web
- github.com /geonetwork/core-geonetwork/releases/tag/4.2.17
- github.com /geonetwork/core-geonetwork/releases/tag/4.4.12
-
github.com
/geonetwork/core-geonetwork
package
Sources
- CVE List CVE-2026-55864
- GitHub Advisory GHSA-5hx7-j24v-rffj
- NVD CVE-2026-55864
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