CVE-2026-4373
HighSummary
Wtyczka JetFormBuilder dla WordPressa jest podatna na odczyt dowolnych plików poprzez przejście ścieżki we wszystkich wersjach do 3.5.6.2 włącznie. Problem wynika z metody 'Uploaded_File::set_from_array', która akceptuje ścieżki plików dostarczane przez użytkowników bez weryfikacji, czy ścieżka należy do katalogu przesyłania WordPressa.
Risk Assessment
Atakujący bez uwierzytelnienia mogą wykradać dowolne lokalne pliki jako załączniki e-mail, co stwarza poważne zagrożenie dla poufności danych w organizacji.
Recommendation
Zaleca się aktualizację wtyczki JetFormBuilder do najnowszej wersji oraz wdrożenie dodatkowych mechanizmów weryfikacji ścieżek plików w formularzach z załącznikami.
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Original NVD description (English source)
The JetFormBuilder plugin for WordPress is vulnerable to arbitrary file read via path traversal in all versions up to, and including, 3.5.6.2. This is due to the 'Uploaded_File::set_from_array' method accepting user-supplied file paths from the Media Field preset JSON payload without validating that the path belongs to the WordPress uploads directory. Combined with an insufficient same-file check in 'File_Tools::is_same_file' that only compares basenames, this makes it possible for unauthenticated attackers to exfiltrate arbitrary local files as email attachments by submitting a crafted form request when the form is configured with a Media Field and a Send Email action with file attachment.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

