CVE-2026-4703

WS Form LITE <= 1.10.80 - Unauthenticated PHP Object Injection via Form Submission

Published Aug 22, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Westguard
Westguard ws Form Lite – Drag & Drop Contact Form Builder
Wordpress
Wordpress wordpress
Vendors & Products Westguard
Westguard ws Form Lite – Drag & Drop Contact Form Builder
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Description 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.
Title WS Form LITE <= 1.10.80 - Unauthenticated PHP Object Injection via Form Submission
Weaknesses CWE-502
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Wordfence
Published
Updated
Aug 24, 2026, 1:01 PM
Reserved
Mar 23, 2026, 11:22 PM
Status
Deferred
Published
Aug 22, 2026, 4:16 PM
Modified
Oct 12, 2026, 4:10 PM