What Happens If You Don’t Update Your WordPress Site?

The short answer: nothing dramatic happens the day you skip an update. Over time, though, an un-updated WordPress site becomes much easier to hack, more likely to break when something finally does get updated, and harder (and more expensive) to fix. The biggest risk is plugins: security researchers consistently find that the large majority of WordPress vulnerabilities are in plugins, not in WordPress itself.

Updates are easy to put off. The site looks fine, the update notices pile up, and nobody wants to be the person who clicked “update” and broke the contact form. Here’s why putting them off is the riskier choice.

Why does WordPress need updates at all?

A WordPress site is made of three layers, and each one gets updated separately:

• WordPress core, the main software
• Your theme, which controls the design
• Your plugins, which add features like forms, SEO tools, booking, and e-commerce

Updates fix bugs, add features, keep everything compatible with newer versions of PHP (the language WordPress runs on), and, most importantly, patch security holes after they’ve been discovered.

Is an outdated WordPress site really at risk of being hacked?

Yes. WordPress runs a huge share of the web (roughly two in five websites, according to W3Techs), so attackers use automated tools that scan for sites running versions with known vulnerabilities. They aren’t targeting your business specifically. They’re looking for any site that’s fallen behind.

Plugins are where most of the risk is. Patchstack, which tracks WordPress security issues, found in its 2025 mid-year report that the overwhelming majority of new vulnerabilities were in plugins, a smaller share in themes, and only one in WordPress core (Patchstack). Once a fix is released, details of the hole are public, and sites that haven’t updated are the easiest targets.

What does a hacked WordPress site actually look like?

It’s rarely a defaced homepage. More often it’s quieter, which is what makes it expensive:

• Spam pages or links injected into your site, which can hurt your search rankings
• Visitors redirected to scam sites, sometimes only on mobile or only from Google
• Hidden admin accounts or “backdoor” files that let attackers back in after a cleanup
• Browser or Google warnings that your site may be unsafe
• Your hosting account suspended, or your emails flagged as spam

Cleaning up a compromised site properly means finding every backdoor, not just the obvious damage. It takes far longer than the updates would have.

What else goes wrong besides security?

• Things break all at once. Skipping updates for a year and then running them all together is much riskier than small, regular updates, because many things change at the same time.
• Hosting moves on without you. Hosts retire old PHP versions. Old plugins that don’t support newer PHP can stop working, sometimes taking the whole site down.
• Abandoned plugins. Some plugins stop being maintained. Regular updates are when you notice, and can replace them before they become a problem.
• Slower pages. Updates often include performance improvements. Outdated sites fall behind.

Can updating WordPress break my site?

Occasionally. That’s the honest answer. Plugins are written by different developers, and an update to one can conflict with another. The fix isn’t to avoid updates. It’s to update in a way that makes problems quick to catch and easy to undo.

What’s a safe update routine?

1. Back up first. Make sure you have a recent, restorable backup of both the files and the database.
2. Update regularly. Small, frequent updates are safer than big, rare ones.
3. Check the site afterwards. Load the homepage and key pages, submit a form, and test checkout or booking if you have them.
4. Remove what you don’t use. Deactivated plugins can still be a security risk. Delete them.
5. Roll back if needed. If something breaks, restore the backup or the previous version, then fix the conflict properly.

How often should WordPress be updated?

Check for updates at least every week or two, and apply security fixes as soon as they’re released. Many small updates are easier to manage than one big catch-up.

If you’d rather not be the one doing it, that’s exactly what PowerUp’s Maintenance plan is for: core, theme, and plugin updates on a regular schedule, security monitoring, basic support, and a monthly report, for $50/month. If your site hasn’t been updated in a while, get in touch. The first step is a quick review to see what needs attention.