GHSA-826p-4gcg-35vw
GeoTools has XML External Entity (XXE) Processing Vulnerability in XSD schema handling
GHSA-826p-4gcg-35vw is a critical vulnerability (CVSS 9.9) in org.geotools:gt-xsd-core, published June 9, 2025. No source lists public exploit code. Fixed in org.geotools:gt-xsd-core 33.1.
- Severity
- 9.9 CriticalCVSS 3.1, GitHub Advisories
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
33.1org.geotools:gt-xsd-core +10 more
Description
Summary
GeoTools Schema class use of Eclipse XSD library to represent schema data structure is vulnerable to XML External Entity (XXE) exploit.
Impact
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.
Resolution
GeoTools API change allows EntityResolver to be supplied to the following methods:
Schemas.parse( location, locators, resolvers, uriHandlers, entityResolver);
Schemas.findSchemas(Configuration configuration, EntityResolver entityResolver);
With this API change the gt-wfs-ng WFS DataStore ENTITY_RESOLVER parameter is now used.
Reference
GHSA-jj54-8f66-c5pc: Describes the impact of the
gt-xsd-corevulnerability on the GeoServer WFS protocol, resulting in both Service Side Request Forgery (SSRF) and Out-of-Band (OOB) data exfiltration of local files.GHSA-2p76-gc46-5fvc: Describes the impact of the
gt-wfs-ngandgt-xsd-corevulnerability on the GeoNetwork WFS Index functionality.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- Low
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.geotools:gt-xsd-coreMaven | 33.0 to 33.0 | 33.1 |
org.geotools:gt-xsd-coreMaven | 32.0 up to 32.3 | 32.3 |
org.geotools:gt-xsd-coreMaven | 29.0 to 31.6 | 31.7 |
org.geotools:gt-wfs-ngMaven | 33.0 up to 33.1 | 33.1 |
org.geotools:gt-wfs-ngMaven | 32.0 up to 32.3 | 32.3 |
org.geotools:gt-wfs-ngMaven | 29.0 to 31.6 | 31.7 |
org.geotools:gt-xsd-coreMaven | before 28.6.1 | 28.6.1 |
org.geotools:gt-wfs-ngMaven | before 28.6.1 | 28.6.1 |
org.geotools:gt-xsd-coreMaven | 33.0 up to 33.1 | 33.1 |
org.geotools:gt-xsd-coreMaven | 29.0 up to 31.7 | 31.7 |
org.geotools:gt-wfs-ngMaven | 29.0 up to 31.7 | 31.7 |
What each source reports
GitHub Advisories Score used
GeoTools has XML External Entity (XXE) Processing Vulnerability in XSD schema handling
Summary
GeoTools Schema class use of Eclipse XSD library to represent schema data structure is vulnerable to XML External Entity (XXE) exploit.
Impact
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.
Resolution
GeoTools API change allows EntityResolver to be supplied to the following methods:
Schemas.parse( location, locators, resolvers, uriHandlers, entityResolver);
Schemas.findSchemas(Configuration configuration, EntityResolver entityResolver);
With this API change the gt-wfs-ng WFS DataStore ENTITY_RESOLVER parameter is now used.
Reference
GHSA-jj54-8f66-c5pc: Describes the impact of the
gt-xsd-corevulnerability on the GeoServer WFS protocol, resulting in both Service Side Request Forgery (SSRF) and Out-of-Band (OOB) data exfiltration of local files.GHSA-2p76-gc46-5fvc: Describes the impact of the
gt-wfs-ngandgt-xsd-corevulnerability on the GeoNetwork WFS Index functionality.
- Record
GHSA-826p-4gcg-35vw- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L - Weakness
- CWE-611
- Updated
- 2026-11-02
OSV
GeoTools has XML External Entity (XXE) Processing Vulnerability in XSD schema handling
Summary
GeoTools Schema class use of Eclipse XSD library to represent schema data structure is vulnerable to XML External Entity (XXE) exploit.
Impact
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.
Resolution
GeoTools API change allows EntityResolver to be supplied to the following methods:
Schemas.parse( location, locators, resolvers, uriHandlers, entityResolver);
Schemas.findSchemas(Configuration configuration, EntityResolver entityResolver);
With this API change the gt-wfs-ng WFS DataStore ENTITY_RESOLVER parameter is now used.
Reference
GHSA-jj54-8f66-c5pc: Describes the impact of the
gt-xsd-corevulnerability on the GeoServer WFS protocol, resulting in both Service Side Request Forgery (SSRF) and Out-of-Band (OOB) data exfiltration of local files.GHSA-2p76-gc46-5fvc: Describes the impact of the
gt-wfs-ngandgt-xsd-corevulnerability on the GeoNetwork WFS Index functionality.
- Record
GHSA-826p-4gcg-35vw- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L - Weakness
- CWE-611
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.