CVE-2026-3296
CriticalCVSS 9.8Exploitation Probability (EPSS)
High risk88th percentile - higher than 88% of all known CVEs
Summary
Wtyczka Everest Forms dla WordPressa jest podatna na wstrzyknięcie obiektów PHP we wszystkich wersjach do 3.4.3 włącznie, poprzez deserializację nieufnych danych wejściowych z metadanych wpisów formularzy. Problem wynika z wywołania funkcji PHP unserialize() na przechowywanych wartościach metadanych bez przekazania parametru allowed_classes.
Risk Assessment
Atakujący bez uwierzytelnienia mogą wstrzykiwać zserializowane obiekty PHP przez publiczne pola formularzy Everest Forms, co stwarza ryzyko wykonania nieautoryzowanego kodu na serwerze. To może prowadzić do poważnych naruszeń bezpieczeństwa w organizacji.
Recommendation
Zaleca się aktualizację wtyczki Everest Forms do najnowszej wersji, aby usunąć tę podatność. Dodatkowo, warto rozważyć ograniczenie dostępu do formularzy tylko dla uwierzytelnionych użytkowników.
Related vulnerabilities
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Original NVD description (English source)
The Everest Forms plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.4.3 via deserialization of untrusted input from form entry metadata. This is due to the html-admin-page-entries-view.php file calling PHP's native unserialize() on stored entry meta values without passing the allowed_classes parameter. This makes it possible for unauthenticated attackers to inject a serialized PHP object payload through any public Everest Forms form field. The payload survives sanitize_text_field() sanitization (serialization control characters are not stripped) and is stored in the wp_evf_entrymeta database table. When an administrator views entries or views an individual entry, the unsafe unserialize() call processes the stored data without class restrictions.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

