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.
CVE-2025-30220
This critical-severity CVE scores 9.9 under NVD CVSS v3. EPSS exploit probability: 13.9%, top 6% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High exploitation likelihood — EPSS 53%
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.9
- EG Score
- 9.9(medium)
- EPSS
- 98.9%
- KEV
- Not listed
Published
June 10, 2025
Last Modified
August 26, 2025
Advisory Details (6)
Auto-updated Jul 20, 2026XML External Entity (XXE) Processing Vulnerability in XSD schema handling · Advisory · geotools/geotools · GitHub
https://github.com/geotools/geotools/security/advisories/GHSA-826p-4gcg-35vwXML External Entity (XXE) Processing Vulnerability in GeoServer WFS Service · Advisory · geoserver/geoserver · GitHub
https://github.com/geoserver/geoserver/security/advisories/GHSA-jj54-8f66-c5pcXML External Entity (XXE) processing vulnerability in WFS indexing REST API endpoint · Advisory · geonetwork/core-geonetwork · GitHub
https://github.com/geonetwork/core-geonetwork/security/advisories/GHSA-2p76-gc46-5fvcUpdate to GeoTools 28.6.1
Patch available: geonetwork/core-geonetwork 4.2.14 (PR #8812 merged 2025-05-21)
https://github.com/geonetwork/core-geonetwork/pull/8812Update to GeoTools 32.3
Patch available: geonetwork/core-geonetwork 4.4.8 (PR #8803 merged 2025-05-16)
https://github.com/geonetwork/core-geonetwork/pull/8803API / WFSHarvesterApi / Restrict to Editor
Patch available: geonetwork/core-geonetwork 4.4.8 (PR #8757 merged 2025-04-25)
https://github.com/geonetwork/core-geonetwork/pull/8757Affected Packages
(2 across 1 ecosystem)
Maven(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| org.geoserver:gs-wfs | — | 2.25.7 | — |
| org.geoserver.web:gs-web-app | — | 2.25.7 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 41× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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- 2026-05-30 03:57 UTCEG score recompute
- 2026-05-29 13:44 UTCEPSS rescore
Publicly available exploits
(1 reference)Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Nucleihttp/cves/2025/CVE-2025-30220.yamlFirst seen Jan 1, 2025
GeoServer WFS - XXE Processing Vulnerability
Open source ↗
Related CVEs(same CWE)
Same CWE
10 shownCWE-918 · CWE-611
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