CVE-2026-5411
HighCVSS 8.8Summary
Wtyczka WP Captcha PRO dla WordPressa jest podatna na nieautoryzowane przesyłanie plików w wersjach do 5.38 włącznie. Problem wynika z braku odpowiednich kontroli w funkcji save_ajax() oraz nieograniczonego rozpakowywania plików w sync_cloud_protection().
Risk Assessment
Atakujący z poziomem dostępu Subskrybenta lub wyższym może przesłać złośliwe pliki, w tym webshell PHP, co prowadzi do możliwości zdalnego wykonania kodu na serwerze. W przypadku włączonej opcji 'allow_url_fopen' w konfiguracji php.ini, ryzyko wzrasta.
Recommendation
Zaleca się aktualizację wtyczki do najnowszej wersji oraz sprawdzenie ustawień php.ini, aby wyłączyć 'allow_url_fopen'.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

