CVE-2023-41339

Name: CVE-2023-41339
Creator: NVD / NIST
Published: 2023-10-25T18:17:30.84+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.51%

Last modified Jun 17, 2026

CVE-2023-41339 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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". EPSS estimates a 0.51% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

0.51%

39.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Osgeo	Geoserver	< 2.22.5
Osgeo	Geoserver	>= 2.23.0, < 2.23.2

References

https://github.com/geoserver/geoserver/releases/tag/2.22.5Release Notes
https://github.com/geoserver/geoserver/releases/tag/2.23.2Release Notes
https://github.com/geoserver/geoserver/security/advisories/GHSA-cqpc-x2c6-2gmfMitigation, Vendor Advisory
https://github.com/geoserver/geoserver/releases/tag/2.22.5Release Notes
https://github.com/geoserver/geoserver/releases/tag/2.23.2Release Notes
https://github.com/geoserver/geoserver/security/advisories/GHSA-cqpc-x2c6-2gmfMitigation, Vendor Advisory

Timeline

Published: Oct 25, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-41339?

How severe is CVE-2023-41339?

CVE-2023-41339 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.

How do I fix CVE-2023-41339?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-41339?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST