by Carlos E. G. Barbosa 4.5 (8 reviews)

Skt NURCaptcha

Name: Skt NURCaptcha
Rating: 4.5 (8 reviews)
Author: Carlos E. G. Barbosa

NURCaptcha inserts a reCAPTCHA on the Register Form of your site to protect it against spambots.

Skt NURCaptcha ranks #15,455 among WordPress.org plugins with 100+ active installations, is #325 of 1,578 in the Authentication category, a 4.5/5 rating from 8 reviews, and was last updated Jul 30, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Tested up to WP 6.1 (Current: 7.1)

v3.6.1 Current Version v3.6.1

Updated 1 month ago Last Update on 30 Jul, 2026

Refreshed 11 hours ago Last Refreshed on

#325 of 1,578 in Authentication Top 25% by installs

View on WordPress.org

Rank

#15,455

-15 this week

Active Installs

100+

-31%

KW Avg Position

— No change

Downloads

26.8K

+1 today

Support Resolved

— No change

Rating

90%

Review 4.5 out of 5

4.5 (8 reviews)

Next Milestone 200

Total Progress 60%

100+ 200+

2,394

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

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Rank Changes

Current #15,455

Change

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Active Installs Growth

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Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

Downloads Growth

Downloads

Growth

Peak

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Reviews & Ratings

4.5

8 reviews

Overall 90%

7 (88%)

0 (0%)

1 (13%)

Security History

Source: WPVulnerability

1 known vulnerability on record · 1 in the last 24 months · checked 1 month ago

Nov 25, 2024

Skt NURCaptcha [skt-nurcaptcha] < 3.6.0 (closed)

CVE-2024-11342 · Fixed in v3.6.0

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Plugin Details

Version: 3.6.1
Last Updated: Jul 30, 2026
Requires WP: 5.0+
Tested Up To: 6.1
PHP Version: N/A
Author: Carlos E. G. Barbosa

Support & Rating

Rating: ★ ★ ★ ★ ★ 4.5
Reviews: 8
Support Threads: 0
Resolved: 0%

Keywords

captcha login form new user security spambots

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TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners who allow free user registration and want to keep spambots out. It adds a reCAPTCHA challenge and spammer database checks to the registration (and optionally login) form to block bots and log blocked attempts.

reCAPTCHA on Register Form
Optional login form protection
Antispam database queries
Logs blocked attempts
Multisite support
BuddyPress compatibility
Dutch and French translations

Frequently Asked Questions

Common questions about Skt NURCaptcha

If you was facing a greater number of spambot registrations than the figures you see now in the log counter, that means the plugin is doing its job perfectly. Almost all the spambots give up their attack when confronted by the reCaptcha challenge, so they come and go silently. These bots may not trigger the counter, but they will not get inside your site walls, either.

That is the main target of any captcha plugin: to catch bots and allow human beings to pass by. In order for it to somehow prevent you against badly mooded human intruders, their data (email & IP) are checked against trustable anti-spam databases (from plugin version 3.0.0 on).

These people will leave their track on the log file. So check the log file regularly to see if there is someone you'd like to bring into your subscribers database. The log will give you that person's username, email and date/time when he tried to register and failed. Then it's up to you to add that user manually or send him an email with directions for an effective registration. The most common problem that keeps good people outside is not due to the reCaptcha, but illegal (non ASCII) characters in usernames. That is why we added a help box to the register form.

On december, 2014, Google released a new version of reCAPTCHA. This new version is more friendly to the user and far more advanced in technology, if compared to the former version. If you are upgrading from an older version of Skt NURCaptcha, we strongly reccomend you to enable the new version, in the settings page of this plugin. If you have this version of the plugin in a fresh installation, the new version of thr reCAPTCHA is enabled by default. The only reason to keep both versions of reCAPTCHA is to allow old users to prepare for the change. We don't know how long will it take till Google disable the old reCAPTCHA's API, so an automatic (forced) transition to the new version will be provided in future releases of this plugin.