CVE-2026-4703
CriticalCVSS 9.8Summary
The WS Form LITE plugin for WordPress up to version 1.10.80 is vulnerable to PHP Object Injection via deserialization of untrusted input from form submission meta values. An unauthenticated attacker can inject a PHP object, but impact is limited unless a POP chain is present via another plugin or theme.
Risk Assessment
If a POP chain is present on the site, an attacker could delete files, access sensitive data, or execute code, posing a serious risk to integrity and confidentiality.
Recommendation
Update WS Form LITE to the latest version and regularly audit installed plugins and themes for POP chains.
Original NVD description (English source)
The WS Form LITE – Drag & Drop Contact Form Builder plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.10.80 via deserialization of untrusted input from form submission meta values. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.