TYPO3 CMS Security

Typo3 Penetration Testing

Uncover vulnerabilities in your Typo3 environment with cutting-edge penetration testing. Safeguard your digital assets and ensure robust security against potential threats.

Our comprehensive penetration testing services for Typo3 delve deep into your system, identifying hidden weaknesses and ensuring compliance with industry standards. By simulating real-world attacks, we provide actionable insights to fortify your security infrastructure. Enhance your defense mechanisms and protect your website from evolving cyber threats.

Core
System
Extensions
Testing
Enterprise
Ready
TYPO3 Penetration Testing
Enterprise
CMS
Secure
Tested
Damian Strobel - CEO DSecured

Damian Strobel

CEO

My Recommendation

Enterprise CMS without open doors

TYPO3 is robust when integrations are cleanly implemented. We check extensions, permissions and deployment processes so your content team can work securely.
Audit Focus

What we test in TYPO3 projects

  • Extensions & Custom Code

    Custom-built extensions, third-party add-ons, and individual TypoScript configurations.

  • Backend Security

    Editor permissions, admin accounts, multi-domain setups, and content approval workflows.

  • Data Flows & Integrations

    REST APIs, form backends, CRM integrations, and export interfaces.

80 % of TYPO3 vulnerabilities are found in custom extensions - we test your individual code.
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Why professional TYPO3 installations need pentests

TYPO3 is the enterprise CMS for complex content structures - with multi-domain support, sophisticated editor permissions, and an extension ecosystem with virtually no limits. It's precisely this flexibility that creates attack surface: custom-developed extensions, outdated third-party packages, or misconfigured TypoScript conditions are enough to compromise servers, customer data, and corporate content.

Security of custom extensions We analyze your custom developments for SQL injections, XSS, deserialization, and authorization bypasses - including Extbase/Fluid templates and AJAX endpoints.

Multi-site & editor models For complex setups with multiple domains, language variants, and content workflows, we test for privilege escalation and cross-site data leaks.

Infrastructure & deployment TYPO3 upgrades, Composer dependencies, and server configurations - we validate deployment processes and patch management.

We deliver prioritized results with code examples, concrete fix instructions for developers, and - if desired - management summaries for IT leadership and executive management.

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When is a TYPO3 pentest worthwhile?

TYPO3 is often the central content backbone for corporate websites, intranets, and complex multi-domain setups. When custom extensions, editor workflows, or external integrations are involved, the attack surface grows exponentially. A TYPO3 pentest is worthwhile whenever downtime, data leaks, or manipulation have real business consequences.

Enterprise & corporate content Multi-domain setups, multilingual sites, or intranet solutions where content governance and access control are business-critical.

Custom extensions & integrations Custom-developed extensions, CRM/ERP integrations, or form backends with payment processing - we test authorization, input validation, and API security.

Compliance & governance GDPR requirements, ISO 27001, or corporate policies require demonstrable security checks before major releases or after extension updates.

Self-assessment: Does your TYPO3 installation need a pentest?

  • Your TYPO3 installation uses self-developed or heavily customized extensions.
  • Multiple editors/teams work in parallel with different permissions and approval workflows.
  • Your setup integrates external systems (CRM, payment, SSO, newsletter tools).
  • The site is business-critical and downtime leads to revenue loss or reputational damage.

If you answer "yes" to at least two of these points, a targeted TYPO3 pentest including extension review usually provides concrete recommendations within a few days.

When is a TYPO3 pentest worthwhile?

TYPO3 pentest: Our approach

We combine whitebox code review with practical exploits - for maximum coverage of custom extensions and enterprise setups.

Whitebox approach (recommended)

For TYPO3 projects, we recommend the whitebox pentest with access to extension code, TypoScript configurations, and deployment processes. We analyze custom extensions for SQL injections, XSS, authorization bypasses, and deserialization - including Extbase/Fluid logic.

  • Code review of all custom extensions
  • TypoScript security audit
  • Backend permissions & workflow tests
  • API & integration security

Blackbox approach

The blackbox pentest simulates an external attacker without prior knowledge. We test publicly accessible endpoints, forms, and login areas. This approach makes sense for third-party audits or when code access is not possible - but finds fewer custom extension bugs.

  • External attacker scenario
  • OWASP Top 10 coverage
  • Scan of public endpoints
  • No extension code review
Our recommendation:

For TYPO3 projects with custom extensions, the whitebox approach is significantly more effective. We find 80 % more vulnerabilities when we can directly review extension code. For standard TYPO3 without custom development, a blackbox test is often sufficient.

How much does a TYPO3 pentest cost?

The price depends on the scope of your TYPO3 installation - we focus on custom extensions and individual configurations instead of core tests.

Quick check

Security check for extensions

For standard setups

€1,500 - €2,500
1-2 test days
  • Focus on 1-3 custom extensions
  • Basic backend security check
  • Fast ticket-based reporting
  • Single site or up to 2 domains
Ideal for: Corporate websites, standard TYPO3 with few custom extensions
Quick Start

Mini Pentest for TYPO3

Our Mini Pentest for TYPO3 tests custom extensions, backend permissions, TypoScript misconfigurations and insecure form handlers. Perfect for corporate websites or intranet solutions that need quick pre-release checks.

8 Hours Intensive Testing

Focused examination of the most critical vulnerabilities

€1,399 net

Transparent fixed price - no hidden costs

Prioritized Results

Fast, actionable reporting as ticket list

Popular add-ons:

Re-Test after remediation (+€399)
Management Summary for stakeholders (+€399)
Double testing time to 16h (+€1,399)
Trust through experience

Some companies we have been able to help

We've had the privilege of working with some of the world's leading companies and strengthening their IT security.

We're here for you

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Have questions about our services? We'd be happy to advise you and create a customized offer.

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Personal Consultation

Direct contact with our experts

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