In 2025, 11,334 vulnerabilities were discovered in the WordPress ecosystem. 91% of them were in plugins — not WordPress core. The platform isn’t the problem. What you’ve installed on top of it is.

Some plugin categories are consistently more dangerous than others — not because they’re poorly built, but because they’re complex, widely installed, and high-value targets. Here are the seven categories with the highest attack frequency in 2026, with real examples from the vulnerability database.

1. Page builders and their add-on plugins
Page builders are installed on tens of millions of sites, which makes them the most profitable target for attackers. The core builders themselves are relatively well-maintained — it’s the third-party add-on plugins where the danger concentrates. Plugins like King Addons for Elementor, Master Addons for Elementor, and The Plus Addons for Elementor have each appeared in multiple 2025–2026 vulnerability reports. A cross-site scripting or privilege escalation flaw in an add-on gives an attacker a foothold, even if the core builder is fully updated.

What to do: Audit every add-on plugin you’ve installed for a page builder. If you’re not actively using it, delete it — not just deactivate. Deactivated plugins still have exploitable code on your server.

2. Contact form plugins
Contact form plugins are among the most widely installed WordPress plugins in existence, and they’ve had a recurring presence in vulnerability reports throughout 2025 and into 2026. Formidable Forms appeared in multiple weekly vulnerability disclosures in early 2026. The exploit types vary — SQL injection, XSS, file upload vulnerabilities — but form plugins handle user-submitted data, which is inherently difficult to sanitise perfectly.

What to do: Keep your form plugin updated obsessively. If you’re running one you no longer actively use — perhaps from an old campaign or a deleted page — remove it entirely.

3. Membership and user registration plugins (Ultimate Member, ProfilePress, s2Member)
Plugins that handle user registration, login, and account management are critical attack targets because a successful exploit can give an attacker authenticated access or even administrator privileges. Ultimate Member and s2Member both appeared in SolidWP’s February 2026 vulnerability reports. The stakes are high: a privilege escalation vulnerability in a membership plugin doesn’t just compromise your site — it can expose your entire user database.

What to do: If you run a membership plugin, treat it like your most critical piece of infrastructure. Enable two-factor authentication for all admin accounts and audit your user list for any accounts you don’t recognise.

4. SEO plugins (All in One SEO, Rank Math, Yoast SEO)
SEO plugins sit in a privileged position — they can modify page content, meta data, and redirects across your entire site. A cross-site scripting vulnerability in an SEO plugin can be leveraged to inject hidden links into your content, which is one of the most common and hardest-to-detect hacks small business sites face.

What to do: Keep your SEO plugin updated and remove any inactive ones. If you switched from one SEO plugin to another, make sure you deleted the old one.

5. Backup and migration plugins (Duplicator, UpdraftPlus, All-in-One WP Migration)
Backup plugins have access to your entire database and file system. A vulnerability here doesn’t just risk your site — it risks every piece of data on it. Duplicator had a CSRF vulnerability disclosed in January 2026. Migration plugins have historically had unauthenticated file upload vulnerabilities that allow attackers to upload arbitrary files to your server.

What to do: Only keep your backup plugin active when you’re running a backup. Delete migration plugins entirely after completing any migration. They have no purpose sitting on a live production site.

6. WooCommerce and e-commerce add-ons
If your site processes payments, it’s a higher-value target. WooCommerce itself is actively maintained, but the ecosystem of add-ons around it has a far patchier security record. WCFM Marketplace and WCFM Membership both appeared in multiple vulnerability reports in early 2026. A compromised e-commerce site faces the highest consequences: financial data exposure, PCI compliance violations, and reputational damage that is nearly impossible to recover from.

What to do: Audit every WooCommerce add-on you’ve installed. Check the last update date for each one. If a plugin hasn’t been updated in over a year, treat it as a liability and find an alternative.

7. Abandoned plugins — any category
This is the most dangerous category on the list, because it’s invisible. An abandoned plugin isn’t one with a scary name or a known exploit — it’s the slider plugin your web designer installed in 2019 that still works fine and nobody has thought about since. The developer stopped maintaining it. Vulnerabilities were discovered. No patch was ever released. More than half of developers whose plugins had vulnerabilities reported to them did not patch the issue before public disclosure — meaning exploit code became public while the fix never came.

What to do: Go to your plugin list right now. Sort by last updated date. Any plugin not updated within the past 12 months is a liability. Research whether it’s still actively maintained. If it isn’t, find an alternative or remove it.
250+ new plugin vulnerabilities are being disclosed every week in 2026. You can’t keep up with this manually. Run our free scan to find out which of your installed plugins have known vulnerabilities right now.

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