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CVE-2026-2374

7.2 · HIGH

The Login No Captcha reCAPTCHA plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `$_SERVER['PHP_SELF']` superglobal in all versions up to, and including, 1.8.0.

Published May 28, 2026CWE-79EPSS 0.35%

Overview

CVE-2026-2374 is a high-severity vulnerability. It was published on May 28, 2026 and has a CVSS 3.1 base score of 7.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The Login No Captcha reCAPTCHA plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `$_SERVER['PHP_SELF']` superglobal in all versions up to, and including, 1.8.0. This is due to the `authenticate()` function storing the unsanitized output of `basename($_SERVER['PHP_SELF'])` in the `login_nocaptcha_error` WordPress option when a login attempt is made from a non-standard login page (e.g., xmlrpc.php). The `admin_notices()` function then echoes this stored value directly into the admin dashboard HTML without escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute when an administrator with a whitelisted IP address visits the WordPress dashboard within 30 seconds of the attack.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/login-recaptcha/tags/1.7.3/login-nocaptcha.php#L281Refplugins.trac.wordpress.org/browser/login-recaptcha/tags/1.7.3/login-nocaptcha.php#L377Refplugins.trac.wordpress.org/browser/login-recaptcha/trunk/login-nocaptcha.php#L281Refplugins.trac.wordpress.org/browser/login-recaptcha/trunk/login-nocaptcha.php#L377Refplugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3549342%40login-recaptcha&new=3549342%40login-recaptcha&sfp_email=&sfph_mail=Refwordpress.org/plugins/login-recaptcha/Refwww.wordfence.com/threat-intel/vulnerabilities/id/99dfce3b-2b47-41bf-8b20-b53fb9f061a7?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2026-2374?

CVE-2026-2374 is a high-severity vulnerability. It was published on May 28, 2026 and has a CVSS 3.1 base score of 7.2 (HIGH).

How severe is CVE-2026-2374?

This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-2374?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-2374?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-2374 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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