Threat intelligence

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

CVE-2026-4703 · ws-form

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Ws Form at a vulnerable version. How SiteRespond intelligence works

Vulnerability: WS Form LITE <= 1.10.80 - Unauthenticated PHP Object Injection via Form Submission
Affected software: ws-form(Plugin)
Affected versions: ≤ 1.10.80
Authentication: Unauthenticated
Vulnerability type: Other
CVE: CVE-2026-4703
Published: 21 August 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: This advisory describes a other issue in the affected software. Review the source advisory and your installed version to assess exposure.
Source: Data imported from Wordfence Intelligence (advisory df36eae9-6f2b-432c-a765-57450939b344). Methodology and redistribution notes

Check whether your installed version is affected

SiteRespond Defence matches your installed Ws Form version against this catalog when the Defence plugin is connected to your WordPress site.

Start SiteRespond Defence for WordPress — £29.99/monthScan your website

All Ws Form advisoriesBack to catalog