Zero Spam for WordPress

79 Quality Score

Active Installs

19/30

With 20,000 active installs, it is a modestly popular plugin, far behind Akismet's 6 million and even ClearTalk's 200,000, so its real-world footprint is limited.

Update Freshness

25/25

Last updated in March 2026 and tested against WordPress 6.9.4, it shows active, current maintenance from the developer.

User Rating

12/15

An 82 out of 100 across 143 ratings indicates generally positive user experiences, though the sample size is small compared to category leaders.

Support Health

8/15

With 2 support threads and 0 resolved, the public support track record is thin and not reassuring for users who may need help.

WP Compatibility

15/15

Tested with WordPress 6.9, requiring PHP 8.2 and WordPress 6.9, it is built for the latest stack and scores perfectly on compatibility.

Scores higher than 72% of indexed plugins

About

No spam, no scams, just seamless experiences with Zero Spam for WordPress - the shield your site deserves.

Active Installs 20k+

Rating ★★★★ 4.1/5

Last Updated 2026-09-23 4:46pm GMT

Requires WordPress 6.9+

Tested Up To 7.1.2

Requires PHP 8.2+

Security History

6 known vulnerabilities, all patched

1 Critical 4 High 1 Medium

Most recent: September 24, 2026

View details ▸

Zero Spam for WordPress <= 5.7.10 - Unauthenticated Stored Cross-Site Scripting via Nested POST Array Keys via Contact Form 7 Integration High

September 24, 2026 Patched in ["5.7.11"] CVE-2026-96752

Zero Spam <= 5.5.6 - Spam Protection Bypass Medium

April 15, 2024 Patched in ["5.5.7"] CVE-2024-32521

Zero Spam <= 5.4.4 - Authenticated (Administrator+) SQL Injection High

May 9, 2023 Patched in ["5.4.5"] CVE-2023-32121

Zero Spam for WordPress <= 5.4.4 - Authenticated(Administrator+) SQL Injection High

May 8, 2023 Patched in ["5.4.5"]

Zero Spam <= 5.2.10 - Admin+ SQL Injection High

February 18, 2022 Patched in ["5.2.11"] CVE-2022-0254

WordPress Zero Spam <= 2.1.1 - SQL Injection Critical

August 24, 2016 Patched in ["2.2.0"]

What It Does

Zero Spam for WordPress blocks comment spam, registration spam, and form spam by analysing submission patterns and IP behaviour without requiring CAPTCHA challenges from real visitors. It runs a set of server-side checks against submissions to filter bots before they touch your content. The result is fewer junk comments and fake sign-ups, with no friction added to your forms.

Who It's For

This plugin suits site owners who want lightweight, no-CAPTCHA spam protection on smaller WordPress sites such as blogs, community forums, and local business pages. It is a good fit for users running modern PHP environments (8.2 or newer) on current WordPress versions. Anyone who values low overhead and simple configuration over deep security suites will appreciate it.

Who Should Skip It

If you run a high-traffic WooCommerce store, a multi-author publication, or a site that needs full firewall and malware scanning, this plugin is not enough on its own. You will want a security platform like Wordfence or a dedicated anti-spam service like Akismet or CleanTalk that scales further and offers broader coverage.

The Bottom Line

Zero Spam for WordPress delivers solid maintenance and clean compatibility on modern WordPress, but its small install base, tiny rating pool, and 0 percent support resolution rate make it a niche pick. It is a reasonable free option for low-risk sites that want simple, CAPTCHA-free spam blocking. For anything mission-critical, the alternatives above offer more proven scale and support.

Pick Akismet if you want the most established, widely trusted comment spam filter with 6 million installs and a near-perfect quality score.

Really Simple Security 99/100

Choose Really Simple Security when your priority is SSL and broader site hardening rather than focused spam blocking.

Wordfence Security 97/100

Pick Wordfence when you need a full firewall plus malware scanning, not just spam filtering on comment forms.

Jetpack 94/100

Choose Jetpack if you want spam protection bundled with backups, performance, and growth tools in one suite.

CleanTalk Anti-Spam 92/100

Pick CleanTalk if you need a cloud-based spam firewall with broader form coverage and 200,000 installs behind it.