CVE-2026-91881 — Dell Terraform Provider for Redfish, versions prior to 1.6.2, contains an Improper…¶

Key facts

CVE-2026-91881 is a Critical (9.0) vulnerability: Dell Terraform Provider for Redfish, versions prior to 1.6.2, contains an Improper…. This entry ships a detection-only PoC and a Docker test lab.


CVE	CVE-2026-91881
Severity	Critical (9.0)
Detection / prevention	—
PoC	poc.py
Source	2026/CVE-2026-91881/

Details¶

English | 한국어

Description¶

Dell Terraform Provider for Redfish, versions prior to 1.6.2, contains an Improper Certificate Validation vulnerability in the HTTP transport component. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to information exposure and unauthorized access. This is a Critical severity vulnerability as it allows an unauthenticated attacker to intercept all Redfish BMC traffic including credentials by performing a man-in-the-middle attack, since TLS certificate verification is unconditionally disabled in the base HTTP transport. Dell recommends customers to upgrade at the earliest opportunity.

Vulnerability Details¶

Property	Value
CVE ID	CVE-2026-91881
Type	RCE
CVSS Score	9.0

Proof of Concept¶

Download¶

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-91881/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-2026-91881

# 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://www.dell.com/support/kbdoc/en-in/000515444/dsa-2026-434-security-update-for-dell-terraform-provider-for-dell-server-multiple-vulnerabilities?msockid=3021cac2195069ed3194ddad186a68f9

Generated by PoC Generator on 2026-10-16T00:58:32.248140665

Frequently asked questions¶

What is CVE-2026-91881?¶

CVE-2026-91881 is a Critical (9.0) vulnerability: Dell Terraform Provider for Redfish, versions prior to 1.6.2, contains an Improper…. This entry ships a detection-only PoC and a Docker test lab.

How do I detect CVE-2026-91881?¶

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-2026-91881?¶

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.