CVE-2023-6963
WordPress vulnerability analysis and mitigation

Overview

The Getwid – Gutenberg Blocks WordPress plugin contains a CAPTCHA Bypass vulnerability (CVE-2023-6963) affecting versions up to and including 2.0.4. The vulnerability was discovered and disclosed in February 2024, impacting the Contact Form block functionality of the plugin (NVD).

Technical details

The vulnerability allows unauthenticated attackers to bypass the CAPTCHA verification mechanism in the Contact Form block. The bypass can be achieved by simply omitting the 'g-recaptcha-response' parameter from the 'data' array in the request. The vulnerability has been assigned a CVSS v3.1 base score of 5.3 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N (NVD).

Impact

When exploited, this vulnerability allows attackers to bypass CAPTCHA protection on contact forms, potentially enabling automated form submissions and spam attacks. This could lead to form spam, server resource consumption, and potential flooding of the target's email inbox (Wordfence).

Mitigation and workarounds

The vulnerability has been patched in version 2.0.5 of the Getwid – Gutenberg Blocks plugin. Users are strongly advised to update to this version or later to protect against potential exploitation. The fix can be found in the WordPress plugin repository (WordPress Patch).

Additional resources


SourceThis report was generated using AI

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