Zero Spam for WordPress

How well this listing is tuned to rank in WordPress.org search, on the factors an owner controls. Not popularity, optimization.

Directory rank vs rivals

wp.org popularity rank over time · higher is better · when a rival's line climbs above yours, they've overtaken you

How often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.

Share of active installs on each version of this plugin · 80% run the current release. Green is the current release; a big slice on older versions is a user base that has stopped updating.

Refined from the date this plugin crossed into its current band.

No paid tier is visible, so we don't put a figure on revenue or sale value: that would be guessing. The install base is a real asset to an acquirer, just not one public data lets us price.

Recent releases and news for this plugin

1. — Version 5.8 fix(settings): resolved multiple PHP 8.x “Undefined array key” warnings for type and module in settings registration and rendering ( #394 ) fix(settings): added centralized Settings::is_valid_setting() validation method 5.8
2. — Version 5.7 fix(bypass vulnerability): see https://patchstack.com/database/database/vulnerability/zero-spam/wordpress-zero-spam-for-wordpress-plugin-5-5-5-bypass-spam-protection-vulnerability 5.7
3. — Version 5.6 fix(missing tables): fix for missing tables error on multisites, #377 5.6
4. — Version 5.5 fix(jquery): fix for jquery not found error when jquery is loaded with defer chore(splorp): updated the slorp blacklist 5.5
5. — Version 5.4 fix(zero spam): fix for error in the zero spam api 5.4
6. — Version 5.3 feat(patchstack): integrating patchstack faqs fix(coding standards): updates to better comply with wp coding standards 5.3

5 disclosed vulnerabilities on record for this plugin, all fixed in the current version. Sites on older versions stay exposed until they update.

1. Medium · 5.3 Zero Spam <= 5.5.6 - Spam Protection Bypass ↗
   2024-04-15 CVE-2024-32521 Protection Mechanism Failure Affects <= 5.5.6 Patched in 5.5.7
2. High · 7.2 Zero Spam <= 5.4.4 - Authenticated (Administrator+) SQL Injection ↗
   2023-05-09 CVE-2023-32121 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') Affects <= 5.4.4 Patched in 5.4.5
3. High · 7.2 Zero Spam for WordPress <= 5.4.4 - Authenticated(Administrator+) SQL Injection ↗
   2023-05-08 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') Affects < 5.4.5 Patched in 5.4.5
4. High · 7.2 Zero Spam <= 5.2.10 - Admin+ SQL Injection ↗
   2022-02-18 CVE-2022-0254 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') Affects <= 5.2.10 Patched in 5.2.11
5. Critical · 9.8 WordPress Zero Spam <= 2.1.1 - SQL Injection ↗
   2016-08-24 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') Affects <= 2.1.1 Patched in 2.2.0

Automated install-time checks, tested on PHP 8.1.12 · WP 7.0.1

Translated into 3 languages, 0 at 90% or more

Growth timeline

Install-tier crossings we have observed, and how long each tier took to outgrow

1. 2026-01-31 30K+ → 20K+ down after 801 days in tier
2. 2023-11-22 40K+ → 30K+ down after 188 days in tier
3. 2023-05-18 30K+ → 40K+ up after 4 days in tier
4. 2023-05-14 40K+ → 30K+ down after 50 days in tier
5. 2023-03-25 30K+ → 40K+ up

Competes with

The plugins that solve the same job, ranked by shared tags then reach, closest match first. The letter on the right is each plugin's health grade (A best, F worst).

• Sucuri Security – Auditing, Malware Scanner and Security Hardening 600K+ installs · 4.2★ · 3 shared tags A
• NinjaFirewall (WP Edition) – Advanced Security Plugin and Firewall 100K+ installs · 4.8★ · 3 shared tags A
• Wordfence Security – Firewall, Malware Scan, and Login Security 5M+ installs · 4.7★ · 2 shared tags A
• Limit Login Attempts Security – Login Security, 2FA, Firewall, Brute Force Prevention 1M+ installs · 4.8★ · 2 shared tags A
• Security Optimizer – The All-In-One Protection Plugin 1M+ installs · 4.5★ · 2 shared tags A
• All-In-One Security (AIOS) – Security and Firewall 1M+ installs · 4.7★ · 2 shared tags A

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Zero Spam for WordPress: 20K+ active installs, 4.1★ (143 reviews). Plugin Pulse (WP Mayor), as of 2026-08-29. https://plugins.wpmayor.com/plugin/zero-spam