CVE-2023-41339 json
Unsecured WMS dynamic styling sld=<url> parameter affords blind unauthenticated SSRF in GeoServer
published 2023-10-24 3 y ago modified 2026-06-17 4 mo ago also GHSA-cqpc-x2c6-2gmf , EUVD-2023-2717
- cvss
- 8.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 50%
- public exploits
- 0
- none known
Summary
GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. The WMS specification defines an ``sld=<url>`` parameter for GetMap, GetLegendGraphic and GetFeatureInfo operations for user supplied "dynamic styling". Enabling the use of dynamic styles, without also configuring URL checks, provides the opportunity for Service Side Request Forgery. This vulnerability can be used to steal user NetNTLMv2 hashes which could be relayed or cracked externally to gain further access. This vulnerability has been patched in versions 2.22.5 and 2.23.2.
Patch / fix
- maven org.geoserver:gs-wms 2.22.5, 2.23.2
- maven org.geoserver.web:gs-web-app 2.22.5, 2.23.2
- geoserver geoserver 2.22.5, 2.23.2
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.geoserver:gs-wms | <2.22.5 >=2.23.0, <2.23.2 |
2.22.5 2.23.2 |
| maven | org.geoserver.web:gs-web-app | <2.22.5 >=2.23.0, <2.23.2 |
2.22.5 2.23.2 |
Affected products
- geoserver geoserver
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/geoserver/geoserver/security/advisories/GHSA-cqpc-x2c6-2gmf
web, mitigation, vendor-advisory
-
github.com
/geoserver/geoserver/releases/tag/2.22.5
web, release-notes
-
github.com
/geoserver/geoserver/releases/tag/2.23.2
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2023-41339
advisory
-
github.com
/geoserver/geoserver
package
Sources
- CVE List CVE-2023-41339
- GitHub Advisory GHSA-cqpc-x2c6-2gmf
- NVD CVE-2023-41339
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