CVE-2026-63637 — Dgraph is an open source distributed GraphQL database.¶

Key facts

CVE-2026-63637 is a High (8.6) vulnerability: Dgraph is an open source distributed GraphQL database.. This entry ships a detection-only PoC and a Docker test lab.


CVE	CVE-2026-63637
Severity	High (8.6)
Detection / prevention	—
PoC	poc.py
Source	2026/CVE-2026-63637/

Details¶

English | 한국어

Description¶

Dgraph is an open source distributed GraphQL database. Prior to 25.3.8, maybeQuoteArg in graphql/resolve/query_rewriter.go passes regexp filter strings into generated DQL without quoting or validating the /pattern/flags form, allowing crafted GraphQL query or mutation filters to inject DQL operators, disclose unintended nodes, or expand modification and deletion targets. This issue is fixed in version 25.3.8.

Vulnerability Details¶

Property	Value
CVE ID	CVE-2026-63637
Type	RCE
CVSS Score	8.6

Proof of Concept¶

Download¶

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-63637/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-2026-63637

# 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/dgraph-io/dgraph/commit/aaff09ab9608f87d88e9d601e71d271306083392
https://github.com/dgraph-io/dgraph/security/advisories/GHSA-33p8-wc97-5qcj

Generated by PoC Generator on 2026-08-08T10:52:32.088454309

Frequently asked questions¶

What is CVE-2026-63637?¶

CVE-2026-63637 is a High (8.6) vulnerability: Dgraph is an open source distributed GraphQL database.. This entry ships a detection-only PoC and a Docker test lab.

How do I detect CVE-2026-63637?¶

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-2026-63637?¶

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.