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CVE-2023-41339

17
FAUCET Score

CVE-2023-41339 is a Server-Side Request Forgery (SSRF) vulnerability affecting GeoServer, an open-source Java-based geospatial data server. This flaw arises from the WMS specification's "sld=<url>" parameter, which, when enabled without proper URL checks, allows attackers to craft malicious requests. The vulnerability carries a medium severity CVSS score of 5.3, indicating a low attack complexity and no user interaction required, with a potential impact of stealing NetNTLMv2 hashes. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.22.5CPE matchmatch criteria
cpe:2.3:a:osgeo:geoserver:*:*:*:*:*:*:*:*
>= 2.23.0, < 2.23.2CPE matchmatch criteria
cpe:2.3:a:osgeo:geoserver:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.51%
Probability of exploitation in next 30 days
EPSS Percentile
40.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0051 is in the 26th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

mavenpatch availablevia ghsa
Product: org.geoserver:gs-wmsFixed in: 2.22.5
mavenpatch availablevia ghsa
Product: org.geoserver:gs-wmsFixed in: 2.23.2
mavenpatch availablevia ghsa
Product: org.geoserver.web:gs-web-appFixed in: 2.22.5
mavenpatch availablevia ghsa
Product: org.geoserver.web:gs-web-appFixed in: 2.23.2
github_advisoryworkaround availablevia nvd_reference
View patch

Vendor Advisories (1)

mavenGHSA-cqpc-x2c6-2gmfmedium

Unsecured WMS dynamic styling sld=<url> parameter affords blind unauthenticated SSRF

Oct 24, 2023

References

github.com / geoserver/geoserver/releases/tag/2.22.5
Release Notes
github.com / geoserver/geoserver/releases/tag/2.23.2
Release Notes
github.com / geoserver/geoserver/security/advisories/GHSA-cqpc-x2c6-2gmf
MitigationVendor Advisory