CVE-2026-76904 — GeoTools is an open source Java library that provides tools for geospatial data.¶
Key facts
CVE-2026-76904 is a Critical (9.8) vulnerability: GeoTools is an open source Java library that provides tools for geospatial data.. This entry ships a detection-only PoC and a Docker test lab.
| CVE | CVE-2026-76904 |
| Severity | Critical (9.8) |
| Detection / prevention | — |
| PoC | poc.py |
| Source | 2026/CVE-2026-76904/ |
Details¶
English | 한국어
Description¶
GeoTools is an open source Java library that provides tools for geospatial data. Starting in version 30.5 and prior to versions 33.6, 34.5, and 33.6, an SQL Injection Vulnerability is present when executing OGC Filters with PostGIS DataStore implementation: jsonArrayContains function; Requires PostGIS 12 or greater with a String or JSON field. For PostGIS 12 and greater jsonArrayContains(<column>, <pointer>, <value>) function writes <value> into generated SQL without escaping. Patches are available in versions 33.6, 34.5, and 33.6. No known workaround is available. To limit scope of SQL Injection the PostGIS connection pool should be configured with limited rights.
Vulnerability Details¶
| Property | Value |
|---|---|
| CVE ID | CVE-2026-76904 |
| Type | SQLI |
| CVSS Score | 9.8 |
Proof of Concept¶
Download¶
# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-76904/poc.py
Usage¶
# Run PoC against target
python3 poc.py --target <TARGET_URL>
# With authentication
python3 poc.py --target <TARGET_URL> --username <USER> --password <PASS>
⚠️ Warning: This PoC is for authorized security testing only. It uses detection-only techniques and does not exploit or damage target systems.
Test Lab¶
This repository includes a Docker-based test environment with both vulnerable and patched applications.
Quick Start¶
# Clone and navigate to CVE directory
cd CVE-2026-76904
# Start both applications
docker-compose up -d
# Run tests
./run-tests.sh # Linux/Mac
./run-tests.ps1 # Windows PowerShell
Application Endpoints¶
| Application | URL | Status |
|---|---|---|
| Vulnerable App | http://localhost:8080 | Shows vulnerability |
| Patched App | http://localhost:8081 | Demonstrates fix |
Directory Structure¶
├── README.md # English documentation
├── README_KO.md # Korean documentation
├── poc.py # PoC detection script
├── docker-compose.yml # Container orchestration
├── run-tests.sh # Linux/Mac test runner
├── run-tests.ps1 # Windows test runner
├── vulnerable-app/ # Vulnerable version
│ ├── app.py
│ ├── Dockerfile
│ └── requirements.txt
└── patched-app/ # Fixed version
├── app.py
├── Dockerfile
└── requirements.txt
References¶
- https://github.com/geotools/geotools/commit/d821c4d321dd91c22e31fcd5b1ce676645da5176
- https://github.com/geotools/geotools/pull/5829
- https://github.com/geotools/geotools/releases/tag/33.6
- https://github.com/geotools/geotools/releases/tag/34.5
- https://github.com/geotools/geotools/releases/tag/35.1
- https://github.com/geotools/geotools/security/advisories/GHSA-mqjf-5f49-2fjh
- https://osgeo-org.atlassian.net/browse/GEOT-7589
- https://osgeo-org.atlassian.net/browse/GEOT-7958
- https://osgeo-org.atlassian.net/browse/GEOT-7959
Generated by PoC Generator on 2026-08-22T08:44:44.927768272
Frequently asked questions¶
What is CVE-2026-76904?¶
CVE-2026-76904 is a Critical (9.8) vulnerability: GeoTools is an open source Java library that provides tools for geospatial data.. This entry ships a detection-only PoC and a Docker test lab.
How do I detect CVE-2026-76904?¶
Run the detection-only PoC included with this entry against your Docker test lab to confirm whether a target is affected; pair it with your own IDS logging.
How do I block or mitigate CVE-2026-76904?¶
Upgrade to a fixed version per the vendor advisory; the NVD record lists the affected versions. Use the included PoC to verify your remediation.
For authorized security testing and research only. See the full source and NVD record.