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Geoserver CVE-2024-23818

MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2024-03-20 security-advisories@github.com
4.8
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

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

Impact

CVSS score of 4.8 (MEDIUM). Attack characteristics: network attack vector, low complexity, high privileges required, user interaction required.

Exploit ScenarioDerived

A remote attacker could inject malicious scripts into web pages viewed by other users by sending crafted requests to the affected application.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.4% 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 4.8), this vulnerability is remotely exploitable, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

Affected Packages

maven org.geoserver:gs-wms fix: 2.23.3, 2.24.1

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package 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 Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. A stored cross-site scripting (XSS) vulnerability exists in versions prior to 2.23.3 and 2.24.1 that enables an authenticated administrator with workspace-level privileges to store a JavaScript payload in the GeoServer catalog that will execute in the context of another user's browser when viewed in the WMS GetMap OpenLayers Output Format. Access to the WMS OpenLayers Format is available to all users by default although data and service security may limit users' ability to trigger the XSS. Versions 2.23.3 and 2.24.1 contain a patch for this issue. Affected products include: Geoserver. Version information: prior to 2.23.3.

Severity by source

NVD PRIMARY 4.8 MEDIUM
AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

DescriptionNVD

GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. A stored cross-site scripting (XSS) vulnerability exists in versions prior to 2.23.3 and 2.24.1 that enables an authenticated administrator with workspace-level privileges to store a JavaScript payload in the GeoServer catalog that will execute in the context of another user's browser when viewed in the WMS GetMap OpenLayers Output Format. Access to the WMS OpenLayers Format is available to all users by default although data and service security may limit users' ability to trigger the XSS. Versions 2.23.3 and 2.24.1 contain a patch for this issue.

Threat Intelligence Overview

EPSS Score
0.4%
Top 66% 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 0.4%
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
No
Human Impact· derived
Medium

Priority Score

24
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +24
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

Affected Products (CPE)NVD

cpe:2.3:a:geoserver:geoserver:*:*:*:*:*:*:*:*
cpe:2.3:a:geoserver:geoserver:2.24.0:-:*:*:*:*:*:*
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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