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CVE-2026-48080 — OpenReception's appointment booking software provides an end-to-end encrypted appointment…

Key facts

CVE-2026-48080 is a High (8.0) vulnerability: OpenReception's appointment booking software provides an end-to-end encrypted appointment…. This entry ships a detection-only PoC and a Docker test lab.
CVE CVE-2026-48080
Severity High (8.0)
Detection / prevention —
PoC poc.py
Source 2026/CVE-2026-48080/

Details

English | 한국어

Description

OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. Prior to version 1.0.2, the GET /api/tenants/{id} endpoint returns the full tenant record to any authenticated TENANT_ADMIN of that tenant, including the databaseUrl field. This field contains the live PostgreSQL connection string the application uses to connect to that tenant's database. In the tested official docker-compose.prod.yml deployment, the connection string contained the user postgres with rolsuper=true and the plaintext password from secrets/postgres_password.txt. Operators who configure a non-superuser PostgreSQL user via secrets/postgres_user.txt would expose a less privileged credential, but the disclosure of the connection string itself is independent of that choice. The same credential applies to every database managed by that PostgreSQL instance: the central appointment_booking database, every per-tenant database (one per tenant), and the postgres administrative database. A TENANT_ADMIN of one tenant who can reach postgres:5432 (directly via internal network, indirectly via any SSRF, RCE, or file-read in the application) can read every other tenant's appointment ciphertexts, key shares, and metadata; read the central user table, including all GLOBAL_ADMIN accounts, password hashes, and session records; modify or delete any data in any tenant database; and/or i a superuser-scoped deployment: use PostgreSQL's pg_read_server_files, COPY ... FROM PROGRAM, and CREATE EXTENSION for further escalation inside the database container. This breaks the per-tenant database isolation that is otherwise the primary cross-tenant control in the application. The application code carefully scopes most queries to the calling tenant's database, but those scopings are irrelevant once the attacker holds the credentials that bypass the application entirely. Version 1.0.2 fixes the issue.

Vulnerability Details

Property Value
CVE ID CVE-2026-48080
Type SSRF
CVSS Score 8.0

Proof of Concept

Download

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-48080/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-2026-48080

# 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/open-reception/appointment-booking-software/commit/ad9e49e3cf66b0cc9a327f6d8a895b23bbd6fea9
  • https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-v7fw-6xpm-7gj9
  • https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-v7fw-6xpm-7gj9

Generated by PoC Generator on 2026-08-08T12:59:48.181687233

Frequently asked questions

What is CVE-2026-48080?

CVE-2026-48080 is a High (8.0) vulnerability: OpenReception's appointment booking software provides an end-to-end encrypted appointment…. This entry ships a detection-only PoC and a Docker test lab.

How do I detect CVE-2026-48080?

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-2026-48080?

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.