Why Using Outdated WordPress Versions, Themes, and Plugins Is Dangerous

WordPress is the world’s most popular CMS, but its power comes with responsibility. Regular updates of WordPress core, themes, and plugins are not just a technical recommendation, they are a legal and compliance requirement under cybersecurity frameworks, regulations, and laws.

In this article, we’ll explain:
– why outdated versions are risky,
– how they are treated under GDPR, NIS2, ISO 27001, CIS Controls, PCI DSS, and OWASP,
– what consequences you face if you ignore updates.

What Does It Mean to Use Outdated WordPress Components?

WordPress Core
Running an outdated version of WordPress means you’re missing critical security patches. Attackers actively exploit vulnerabilities that are publicly documented.

WordPress Themes
A theme is more than just design, it contains PHP and JavaScript code. If it isn’t updated, it can become incompatible with new WordPress or PHP versions, creating serious security risks.

WordPress Plugins
Plugins are the most common attack vector. Outdated plugins can compromise e-commerce checkouts, contact forms, or systems that handle user data.

How Regulations and Security Frameworks View Outdated Components

NIS2 Directive
Requires organizations to apply state-of-the-art security measures. Using outdated WordPress components = non-compliance.

ISO/IEC 27001 & 27002
Controls A.8.8 and A.12.6.1 mandate regular maintenance and patch management.

CIS Controls v8
Control 7: Outdated software must be updated or removed.
Control 2: Plugins and themes must be inventoried and monitored.

OWASP Top 10
A06: Vulnerable and Outdated Components” directly covers outdated WordPress versions, themes, and plugins.

GDPR (Article 32)
If a data breach occurs due to an old plugin or theme, the organization may be held accountable for failing to apply “appropriate technical measures.”

PCI DSS
For e-commerce sites, security patches must be installed within 30 days.

Consequences of Not Maintaining WordPress
Security risk: higher chance of hacking and malware injections.
Legal risk: fines and liability under GDPR, NIS2, and other laws.
Reputation: loss of customer and user trust.
Audit risk: findings classified as critical non-compliance.

Using outdated WordPress versions, themes, and plugins is not just a technical oversight – it’s a legal and security risk. Regular updates are essential to protect your website, safeguard data, and stay compliant with regulations.

Tip: Establish a clear update process and implement security monitoring – it’s a small investment compared to the cost of a cyber incident.

Want to keep your WordPress website secure, compliant, and up to date?
Contact us for expert maintenance, security hardening, and compliance support.