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Plugins · gdpr-compliant-recaptcha-for-all-forms · data as of 2026-11-04

Is Invisible Anti-Spam & CAPTCHA safe? Known vulnerabilities and latest version

No known unpatched vulnerabilities in the latest version (6.3.0)

As of 2026-11-04. 5 issues are on record for older versions; version 5.1.1 or newer fixes all of them that state a fix.

Latest version
6.3.0
Last updated
2026-10-29
Active installs
5,000+
Known issues on record
5
Unpatched in latest
0
Tested up to WP
7.1.4 · PHP 7.1+

Invisible spam protection for every form, login and checkout. No puzzles, no checkboxes, no lost visitors — a CAPTCHA your users never see. — by Matthias Nordwig

What to do

  1. Update to the latest version (6.3.0). Anything older than 5.1.1 has at least one known issue listed below. Dashboard → Updates, or Plugins → “update now”.
  2. If you cannot update right away, deactivate it until you can.
  3. Turn on auto-updates for it: Plugins → “Enable auto-updates” on its row.
  4. If you ran a vulnerable version and something looks off (spam pages, strange admins, redirects), run the free scan.

With WP-CLI: wp plugin get gdpr-compliant-recaptcha-for-all-forms --field=version shows what you run; wp plugin update gdpr-compliant-recaptcha-for-all-forms updates it.

Check your version

Known vulnerabilities

5 on record, newest first. “Affected” is the version range the source gives; “fixed in” is the version the source names, or (marked *) the first wordpress.org release after the last affected version.

medium 4.3 CVE-2026-91010 · published 2026-09-17

Missing authorization check in Invisible Anti-Spam & CAPTCHA (2.0.5 up to (not including) 5.1.1)

Affected
2.0.5 up to (not including) 5.1.1
Fixed in
5.1.1
Access needed (per CVSS)
Needs a low-level account (e.g. subscriber)
Range from
CVE record (the advisory publisher) · score by CISA ADP
Details from the advisory

The Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms WordPress plugin before 5.1.1 does not check the user's capabilities in its message deletion AJAX action, and only tests that a nonce parameter is present rather than validating it, allowing any authenticated user, such as a subscriber, to permanently delete every form submission the Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms WordPress plugin before 5.1.1 has stored.

NVD CVE-2026-91010WPScan advisory

high 7.2 CVE-2026-16145 · published 2026-08-15

Stored cross-site scripting (XSS) in Invisible Anti-Spam & CAPTCHA (5.1 and older)

Affected
5.1 and older
Fixed in
5.1.1 *
Access needed (per CVSS)
No login needed
Range from
CVE record (the advisory publisher) · score by Wordfence
Details from the advisory

The Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'action' parameter in all versions up to, and including, 5.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The stored payload is written by any unauthenticated admin-ajax.php request whose action value matches an entry in the plugin's explicit-actions list, which is auto-populated for common form builders at activation and requires no authentication gate to reach the save path.

NVD CVE-2026-16145Wordfence advisoryCode change (fix)Plugin source

medium 4.9 CVE-2026-16146 · published 2026-08-15

SQL injection in Invisible Anti-Spam & CAPTCHA (5.1 and older)

Affected
5.1 and older
Fixed in
5.1.1 *
Access needed (per CVSS)
Needs an admin-level account
Range from
CVE record (the advisory publisher) · score by Wordfence
Details from the advisory

The Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms plugin for WordPress is vulnerable to generic SQL Injection via Pattern JSON Keys/Values in all versions up to, and including, 5.1 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with editor-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

NVD CVE-2026-16146Wordfence advisoryCode change (fix)Plugin source

medium 4.9 CVE-2026-16094 · published 2026-08-15

SQL injection in Invisible Anti-Spam & CAPTCHA (5.1 and older)

Affected
5.1 and older
Fixed in
5.1.1 *
Access needed (per CVSS)
Needs an admin-level account
Range from
CVE record (the advisory publisher) · score by Wordfence
Details from the advisory

The Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms plugin for WordPress is vulnerable to generic SQL Injection via the 'key' parameter in all versions up to, and including, 5.1 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with editor-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

NVD CVE-2026-16094Wordfence advisoryCode change (fix)Plugin source

medium 4.3 CVE-2025-49283 · published 2025-06-06

Cross-site request forgery (CSRF) in Invisible Anti-Spam & CAPTCHA (4.1.1 and older)

Affected
4.1.1 and older
Fixed in
4.1.2
Access needed (per CVSS)
No login needed; someone on the site has to click a link or open a page
Range from
CVE record (the advisory publisher) · score by Patchstack
Details from the advisory

Cross-Site Request Forgery (CSRF) vulnerability in Matthias Nordwig Anti-spam, Spam protection, ReCaptcha for all forms and GDPR-compliant gdpr-compliant-recaptcha-for-all-forms allows Cross Site Request Forgery.This issue affects Anti-spam, Spam protection, ReCaptcha for all forms and GDPR-compliant: from n/a through <= 4.1.1.

NVD CVE-2025-49283Patchstack advisory

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Where this data comes from

Badge for your site or docs (states facts with a date, not a verdict):
Invisible Anti-Spam & CAPTCHA vulnerability status badge
<a href="https://laskyr.com/plugins/gdpr-compliant-recaptcha-for-all-forms"><img src="https://laskyr.com/plugins/gdpr-compliant-recaptcha-for-all-forms/badge.svg" alt="Invisible Anti-Spam & CAPTCHA vulnerability status"></a>

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