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Geoserver CVE-2023-41339

MEDIUM
Server-Side Request Forgery (SSRF) (CWE-918)
2023-10-25 security-advisories@github.com
5.3
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V4 - API and Web Service URL allowlisting, SSRF prevention
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Credential Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 5.3 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.

Exploit ScenarioDerived

A remote attacker could make the server perform requests to unintended internal or external resources by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.5% exploitation probability (EPSS)

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AnalysisAI

GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate and allowlist destination URLs, block requests to internal networks, use network segmentation.

Affected Packages

maven org.geoserver.web:gs-web-app fix: 2.22.5, 2.23.2
maven org.geoserver:gs-wms fix: 2.22.5, 2.23.2

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages in maven

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Server-Side Request Forgery (SSRF) (CWE-918), which allows attackers to make the server perform requests to unintended internal or external resources. 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. Affected products include: Osgeo Geoserver.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

DescriptionNVD

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.

Threat Intelligence Overview

EPSS Score
0.5%
Top 60% exploitable
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.5%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +26
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Server-Side Request Forgery exploits applications that fetch remote resources based on user-supplied URLs.

Affected Products (CPE)NVD

cpe:2.3:a:osgeo:geoserver:*:*:*:*:*:*:*:*
cpe:2.3:a:osgeo:geoserver:*:*:*:*:*:*:*:*
CVE-2025-58360 CRITICAL POC
9.8 Nov 25

Unauthenticated XML External Entity processing in GeoServer's WMS GetMap endpoint allows remote attackers to read arbitr

CVE-2024-36401 CRITICAL POC
9.8 Jul 01

GeoServer is an open source server that allows users to share and edit geospatial data. Rated critical severity (CVSS 9.

CVE-2025-30220 CRITICAL POC
9.9 Jun 10

A remote code execution vulnerability in GeoServer (CVSS 9.9) that allows users. Risk factors: public PoC available. Ven

CVE-2023-43795 CRITICAL POC
9.8 Oct 25

GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. Rated c

CVE-2023-25157 CRITICAL POC
9.8 Feb 21

GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. Rated c

CVE-2023-5786 HIGH POC
8.8 Oct 26

A vulnerability was found in GeoServer GeoWebCache up to 1.15.1. Rated high severity (CVSS 8.8), this vulnerability is r

CVE-2024-29198 HIGH POC
7.5 Jun 10

GeoServer contains a Server-Side Request Forgery (SSRF) vulnerability in the Demo request endpoint (TestWfsPost servlet)

CVE-2024-23634 MEDIUM POC
6.0 Mar 20

GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. Rated m

CVE-2023-35042 CRITICAL
9.8 Jun 12

GeoServer 2, in some configurations, allows remote attackers to execute arbitrary code via java.lang.Runtime.getRuntime(

CVE-2025-27505 MEDIUM POC
5.3 Jun 10

GeoServer is an open source server that allows users to share and edit geospatial data. It is possible to bypass the def

CVE-2024-38524 MEDIUM POC
5.3 Jun 10

GeoServer is an open source server that allows users to share and edit geospatial data. org.geowebcache.GeoWebCacheDispa

CVE-2024-34711 CRITICAL
9.3 Jun 10

CVE-2024-34711 is an improper URI validation vulnerability in GeoServer that allows unauthenticated attackers to bypass

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