CVE-2026-48019 — Laravel is a web application framework.¶
Key facts
CVE-2026-48019 is a High (8.9) vulnerability: Laravel is a web application framework.. This entry ships a detection-only PoC and a Docker test lab.
| CVE | CVE-2026-48019 |
| Severity | High (8.9) |
| Detection / prevention | — |
| PoC | poc.py |
| Source | 2026/CVE-2026-48019/ |
Details¶
English | 한국어
Description¶
Laravel is a web application framework. Prior to versions 12.60.0 and 13.10.0, a CRLF injection vulnerability in Laravel's email validation, in combination with how Symfony Mailer and Symfony Mime handle certain character sequences, may allow an unauthenticated attacker to interfere with outbound email processing in applications that send mail to user-supplied addresses. This issue has been patched in versions 12.60.0 and 13.10.0.
Vulnerability Details¶
| Property | Value |
|---|---|
| CVE ID | CVE-2026-48019 |
| CVSS Score | 8.9 |
Proof of Concept¶
Download¶
# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-48019/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-2026-48019
# 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/laravel/framework/commit/96e9a663db657cf37ef26cd794fda8ff60eaa451
- https://github.com/laravel/framework/commit/f336ba79e744257f84ebf0d096b0ebc62e8e1a4d
- https://github.com/laravel/framework/pull/60151
- https://github.com/laravel/framework/releases/tag/v12.60.0
- https://github.com/laravel/framework/releases/tag/v13.10.0
- https://github.com/laravel/framework/security/advisories/GHSA-5vg9-5847-vvmq
Generated by PoC Generator on 2026-09-05T09:06:36.577834861
Frequently asked questions¶
What is CVE-2026-48019?¶
CVE-2026-48019 is a High (8.9) vulnerability: Laravel is a web application framework.. This entry ships a detection-only PoC and a Docker test lab.
How do I detect CVE-2026-48019?¶
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-2026-48019?¶
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.