CVE-2026-16094
Invisible Anti-Spam & CAPTCHA <= 5.1 - Authenticated (Editor+) SQL Injection via 'key' Parameter
Description
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.
INFO
Published Date :
Aug. 15, 2026, 4:18 a.m.
Last Modified :
Oct. 22, 2026, 10:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-16094
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the 'Invisible Anti-Spam & CAPTCHA' plugin to the latest version.
- Apply security patches for the plugin.
- Validate and sanitize all user inputs.
- Use prepared statements for all SQL queries.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-16094.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-16094 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-16094
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-16094 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-16094 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Translated by [email protected]
Oct. 22, 2026
Action Type Old Value New Value Added Translation Title: Invisible Anti-Spam y CAPTCHA - reCAPTCHA Alternative for All Forms de matthiasnordwig, Description: El plugin The Invisible Anti-correo no deseado & CAPTCHA - reCAPTCHA Alternativa para todos los formularios para WordPress es vulnerable a inyección SQL genérica a través del parámetro ’key’ en todas las versiones hasta la 5.1, inclusive, debido a un escape insuficiente en el parámetro proporcionado por el usuario y la falta de preparación suficiente en la consulta SQL existente. Esto hace posible que atacantes autenticados, con acceso de nivel de editor y superior, añadan consultas SQL adicionales a consultas ya existentes que pueden utilizarse para extraer información sensible de la base de datos. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-16094', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-17T19:26:16.113559Z'} -
New CVE Received by [email protected]
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'matthiasnordwig', 'product': 'Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '5.1'}], 'defaultStatus': 'unaffected'}] Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-89 Added Reference https://plugins.trac.wordpress.org/browser/gdpr-compliant-recaptcha-for-all-forms/tags/5.0/includes/class-message-page.php#L428 Added Reference https://plugins.trac.wordpress.org/browser/gdpr-compliant-recaptcha-for-all-forms/tags/5.0/includes/class-message-page.php#L451 Added Reference https://plugins.trac.wordpress.org/browser/gdpr-compliant-recaptcha-for-all-forms/tags/5.0/includes/class-message-page.php#L503 Added Reference https://plugins.trac.wordpress.org/browser/gdpr-compliant-recaptcha-for-all-forms/tags/5.0/includes/class-message-page.php#L767 Added Reference https://plugins.trac.wordpress.org/browser/gdpr-compliant-recaptcha-for-all-forms/tags/5.0/includes/class-message-page.php#L769 Added Reference https://plugins.trac.wordpress.org/browser/gdpr-compliant-recaptcha-for-all-forms/tags/5.0/includes/class-option.php#L290 Added Reference https://plugins.trac.wordpress.org/browser/gdpr-compliant-recaptcha-for-all-forms/tags/5.0/includes/class-option.php#L292 Added Reference https://plugins.trac.wordpress.org/changeset/3633500/gdpr-compliant-recaptcha-for-all-forms Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/2d97ca8e-e735-4312-bfb2-5c434cb5b190?source=cve