Reported vulnerability

WP Captcha PRO <= 5.38 - Missing Authorization to Authenticated (Subscriber+) Arbitrary File Upload

Q: Which versions of Advanced Google reCAPTCHA are affected?

Wordfence lists these affected versions: Start version unspecified, through 5.38. Use the version checker above to compare your installed release with this report.

Q: Is a fix available for Advanced Google reCAPTCHA?

Wordfence reports a fix for this issue in Advanced Google reCAPTCHA. It lists these fixed versions: 5.39. Back up your website and test the recommended update before applying it to your live site.

Q: Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Published 5 Jun 2026

Updated 5 Jun 2026

CVE-2026-5411

Compare your installed software with the affected versions below. Follow the source’s remediation guidance and test an available update after taking a backup. A database entry describes a reported issue; it does not establish whether a particular website has been compromised.

Does this affect my version?

Check your installed version against this advisory. This compares the report’s version ranges and does not scan your website.

Wordfence advisory

high · CVSS 8.8

The WP Captcha PRO (the premium version of the Advanced Google reCAPTCHA plugin, both have the same slug) plugin for WordPress is vulnerable to arbitrary file upload in all versions up to, and including, 5.38. This is due to a capability check in the save_ajax() function of the licensing module, combined with unrestricted file extraction in sync_cloud_protection(). This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload arbitrary files including PHP webshells to the server by injecting a malicious cloud_protection_url into the license meta, which the plugin then downloads and extracts without file type validation into a web-accessible uploads directory. This can be used for remote code execution. Note: The vulnerability can only be exploited with a remote URL if "allow_url_fopen" is enabled in the php.ini config.

Severity vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Advanced Google reCAPTCHA

Software: plugin · advanced-google-recaptcha
Affected versions: Start version unspecified, through 5.38
Fix availability: Fix available
Fixed versions: 5.39

Recommended action

Update to version 5.39, or a newer patched version

Further references (1)

wordfence.com/threat-intel/vulnerabilities/id/92652339-ec86-4069-aeee-91c314ed2540?source=api-prod

Data sources and licences

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CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Read licence terms

Source: Wordfence

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Questions about this vulnerability

Which versions of Advanced Google reCAPTCHA are affected?

Wordfence lists these affected versions: Start version unspecified, through 5.38. Use the version checker above to compare your installed release with this report.

Is a fix available for Advanced Google reCAPTCHA?

Wordfence reports a fix for this issue in Advanced Google reCAPTCHA. It lists these fixed versions: 5.39. Back up your website and test the recommended update before applying it to your live site.

Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Does an affected version mean my website has been hacked?

An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.

These reports cover at least one of the same plugins, themes or WordPress core. Check each report’s affected versions separately.

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