GeoServer up to 2.25.6/2.26.2/2.27.0 xml external entity reference

Summaryinfo

A vulnerability labeled as problematic has been found in GeoServer up to 2.25.6/2.26.2/2.27.0. Impacted is an unknown function. Such manipulation leads to xml external entity reference. This vulnerability is listed as CVE-2025-30220. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in GeoServer up to 2.25.6/2.26.2/2.27.0. Affected by this issue is an unknown part. The manipulation with an unknown input leads to a xml external entity reference vulnerability. Using CWE to declare the problem leads to CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. Impacted is confidentiality, integrity, and availability. CVE summarizes:

GeoServer is an open source server that allows users to share and edit geospatial data. GeoTools Schema class use of Eclipse XSD library to represent schema data structure is vulnerable to XML External Entity (XXE) exploit. This impacts whoever exposes XML processing with gt-xsd-core involved in parsing, when the documents carry a reference to an external XML schema. The gt-xsd-core Schemas class is not using the EntityResolver provided by the ParserHandler (if any was configured). This also impacts users of gt-wfs-ng DataStore where the ENTITY_RESOLVER connection parameter was not being used as intended. This vulnerability is fixed in GeoTools 33.1, 32.3, 31.7, and 28.6.1, GeoServer 2.27.1, 2.26.3, and 2.25.7, and GeoNetwork 4.4.8 and 4.2.13.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-30220 since 03/18/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 2.25.7, 2.26.3 or 2.27.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-17683). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

• GeoServer

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.25
• 2.25.0
• 2.25.1
• 2.25.2
• 2.25.3
• 2.25.4
• 2.25.5
• 2.25.6
• 2.26
• 2.26.0
• 2.26.1
• 2.26.2
• 2.27.0

Website

• Product: https://github.com/geoserver/geoserver/

CPE 2.3info

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CPE 2.2info

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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