CVE-2023-41339Unsecured WMS dynamic styling sld=<url> parameter affords blind unauthenticated SSRF in GeoServer
- 8.6HighCVSS base score
- 0.63%Exploitation in 30 daysEPSS · top 49% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By GitHub_M
- 57 days later
· 57 days later
Published
- 11 months later
· 11 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L |
| NVDNVD · Modified | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.63% · top 49% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.6.
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.geoserver.web:gs-web-appGHSA-cqpc-x2c6-2gmf (opens in a new tab)
- Mavenorg.geoserver:gs-wmsGHSA-cqpc-x2c6-2gmf (opens in a new tab)
References
References3
- https://github.com/geoserver/geoserver/security/advisories/GHSA-cqpc-x2c6-2gmf (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/geoserver/geoserver/releases/tag/2.22.5 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/geoserver/geoserver/releases/tag/2.23.2 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-2717 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-cqpc-x2c6-2gmf (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-41339)Record last updated .