The PHP security crisis shows that keeping your website up to date matters

Your website might look exactly the same as the day it launched, but the technology behind it is constantly changing. A recent PHP security vulnerability is a reminder of why keeping your website up to date matters, even when everything seems to be working perfectly.

When you're running a business, there are always things competing for your attention and budget. Your website needs to look good, work properly and bring in enquiries, but it's easy to forget about the technology running behind the scenes.

If your website is working well, why spend money upgrading it? Surely, if it isn't broken, there's nothing to fix?

Unfortunately, it's not quite that simple.

What is PHP, and why does it matter?

PHP is a programming language used to build and run websites. It works behind the scenes, helping to process information and deliver the pages and functionality visitors see.

It's widely used across the web, including by content management systems such as WordPress.

Like any software, PHP needs to be maintained. Updates fix bugs, improve performance and address security vulnerabilities that could leave websites exposed to attack.

What's happened with the recent PHP security vulnerability?

In October 2026, serious security vulnerabilities in PHP highlighted the risks of running vulnerable software and the importance of applying security updates.

The important thing to understand is that PHP sits behind your website. A problem with it won't necessarily be visible when you visit your site or log into your CMS.

Your website could look perfectly normal, with everything working as expected, while the underlying software has a security weakness.

When a vulnerability is discovered, developers work to fix it. But those fixes only protect your website if the relevant updates are applied.

Having a website that works isn't the same as having a website that's secure and up to date.

Are there alternatives to PHP?

Yes. Other programming languages used to build websites include JavaScript and Node.js, Python, C# and .NET, and Java (I favour a .NET CMS called Umbraco which you can read more about here.)

Each has its own strengths, and the right choice depends on what the website needs to do and how it's built.

But switching to a different programming language isn't a solution to the need for ongoing maintenance. All software can have vulnerabilities, and all websites need to be supported and kept up to date.

The question isn't necessarily which technology your website uses. It's whether that technology is supported and being looked after properly.

Why are website upgrades so important?

Upgrades can feel like an unnecessary expense, particularly when your website is working well. But there are some important reasons to keep your software current.

• Security: Updates fix vulnerabilities that could otherwise leave your website exposed.

• Ongoing support: Software eventually reaches the end of its supported life, meaning security fixes may no longer be available.

• Compatibility: Older software can stop working properly with newer servers, integrations and other systems.

• Future costs: Leaving upgrades for years can turn a manageable update into a much bigger project, particularly if custom functionality needs rewriting.

Planning ahead gives you more control over the timing, budget and potential disruption.

Isn't upgrading just spending money on nothing?

This is one of the biggest challenges with website maintenance.

If you invest in a new design or useful functionality, you can see what you've paid for. Preventative upgrades are different. You might spend money updating the software, and afterwards your website looks exactly the same.

So it's understandable to question the expense. Where's the benefit?

The value is in what you're helping to prevent. You're investing in keeping your website secure, supported and working as it should, reducing the risk of an urgent security issue or a much more expensive problem further down the line.

Of course, upgrades can't guarantee that nothing will ever go wrong. But keeping software supported puts you in a much better position than waiting for something to break.

It's a bit like servicing your car. You don't necessarily see an immediate benefit, but leaving everything until something goes wrong can cost you much more.

Preventative maintenance can feel like money spent on nothing. But in the long run, it can be a much better investment than waiting for a problem to force your hand.

I've written more about this in my blog post on website upgrades and why they're worth investing in.

Who's actually looking after your website?

Perhaps an agency built your website a few years ago, a separate company manages your hosting, and someone else looks after your content or marketing.

But who's responsible for keeping the technology up to date?

Your hosting provider might look after the server, but that doesn't necessarily mean they're updating your CMS or checking your website's custom code. Similarly, the agency that built your website might not be monitoring security issues unless you have an ongoing support arrangement.

It's worth asking a few straightforward questions:

• What is my website built on, and are the versions still supported?

• Who is responsible for security updates and technical maintenance?

• Who checks that updates haven't affected the website's functionality?

• Are backups in place if something goes wrong?

• Who will tell me when a larger upgrade is needed?

You don't need to know all the technical answers yourself. You just need to know who does, and who's responsible for acting on them.

Your CMS is only part of the picture

Your content management system (CMS) is the platform you use to manage your website's content. But it's only one part of the wider setup.

Your website may also rely on a programming language, database, server environment, plugins and custom-developed functionality. Each can have its own update requirements and support arrangements.

Updating your CMS doesn't automatically mean everything else is up to date. Understanding the bigger picture helps you make better decisions and plan for future upgrades before they become urgent.

Looking after your website for the long term

The recent PHP security vulnerability is a reminder that a website isn't something you can simply build, launch and forget about.

The technology behind it continues to evolve, and keeping it secure and supported takes ongoing attention.

If you're not sure what your website is built on, when it was last updated or who's responsible for maintaining it, start by asking your website provider. Find out whether everything is supported and what needs attention now or in the future.

At Hayley Mark Digital, I help businesses make sense of their website requirements, plan improvements and coordinate the people involved in delivering them, including making sure upgrades are properly planned and managed.

Because looking after your website isn't just about fixing things when they go wrong. It's about keeping it secure, supported and fit for purpose.

And sometimes, the best investment is the one that helps you avoid a much bigger problem later.