Blue Captcha
Blue Captcha is a powerful and highly customized WordPress plugin that effectively protects your WP blogs from spammers and unwanted persons.
Blue Captcha ranks #9,399 among WordPress.org plugins with 400+ active installations, is #256 of 1,584 in the Authentication category, a 4.7/5 rating from 15 reviews, and was last updated Aug 17, 2026. Data from WordPress.org, refreshed twice daily — see methodology.
Next Milestone 500
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Security History
Source: WPVulnerability2 known vulnerabilities on record · 2 in the last 24 months · checked 1 month ago
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UNPATCHED
Blue Captcha [blue-captcha] <= 2.0.1 (unfixed)
CVE-2026-10552 · No fix released
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Blue Captcha [blue-captcha] < 2.0.0
CVE-2025-28880 · Fixed in v2.0.0
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- Version
- 2.1.0
- Last Updated
- Aug 17, 2026
- Requires WP
- 4.9+
- Tested Up To
- 7
- PHP Version
- 7.0 or higher
- Author
- jotis
Support & Rating
- Rating
- ★ ★ ★ ★ ★ 4.7
- Reviews
- 15
- Support Threads
- 0
- Resolved
- 0%
Keywords
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TL;DR
AI summary of the plugin's readmeBlue Captcha is for WordPress site owners who want to protect login, registration, comment, and password recovery forms from spam. It solves the problem of spammers, bots, and unwanted users abusing these forms by providing customizable CAPTCHA challenges and logging tools to identify and block offenders.
- Protects login, registration, comment, recovery forms
- 7 predefined CAPTCHA difficulty levels
- Custom difficulty level creation
- Preview CAPTCHA image before applying
- 5 fonts and 30 background images
- Single or double CAPTCHA layer
- Up to 20 characters on images
- Log file and Hall of Shame tracking
Frequently Asked Questions
Common questions about Blue Captcha