WORDPRESS · AUGUST 2026 · EARLY WARNING

WS Form LITE WordPress Plugin Vulnerable to PHP Object Injection

EARLY WARNING · UNCONFIRMED. This page describes a developing threat that 0Day surfaced from early signals and has not yet independently confirmed. Details may change. Always verify against the primary sources before acting.
Severity
CRITICAL
CVSS
9.8
Affected component
ws form lite (wordpress)
Patched version
Not yet available
CVE-2026-4703

The WS Form LITE, Drag & Drop Contact Form Builder plugin for WordPress is under investigation for a critical vulnerability in versions up to, and including, 1.10.80. This vulnerability may allow unauthenticated attackers to inject a PHP Object.

What happened

The WS Form LITE plugin for WordPress is reportedly vulnerable to PHP Object Injection in all versions up to, and including, 1.10.80. This vulnerability arises from the deserialization of untrusted input from form submission meta values, which could enable unauthenticated attackers to inject a PHP Object. The presence of a POP chain via another plugin or theme could exacerbate the impact, potentially allowing attackers to delete arbitrary files, retrieve sensitive data, or execute code.

This vulnerability, tracked as CVE-2026-4703, was first flagged on 2026-08-22T16:16:29.497000+00:00. The CVSS score is 9.8, indicating a critical severity level. However, there is no evidence that this vulnerability has been exploited in the wild as of the latest reports.

What to do about it

How 0Day would have caught this

MATCHED TO YOUR ACTUAL DEPENDENCY GRAPH0Day matches every incoming threat signal against your GitHub organization’s full dependency graph, including transitive dependencies. If ws form lite is anywhere in your dependency tree, the engineers who own the affected repositories get a push alert the moment it is flagged — no manual audit to remember to run.

Read how this differs from waiting on a scanner to catch a known advisory, or see the exact, read-only access 0Day needs to do this for an organization.

Frequently asked questions

Am I affected?

You are affected if you are using the WS Form LITE plugin for WordPress in versions up to, and including, 1.10.80.

What should I do right now?

Upgrade the WS Form LITE plugin to a version beyond 1.10.80 and ensure no plugins or themes with a POP chain are installed on the site.

Is there an official fix available?

No official fix has been published yet. Monitor the sources for updates.

What is the severity of this vulnerability?

The severity of this vulnerability is critical, with a CVSS score of 9.8.

Sources

Join the 0Day waitlist →

← Back to all threats