CVE-2026-122231

WS Form LITE <= 1.12.18 - Unauthenticated Stored Cross-Site Scripting via Text Field Array Value

2026-11-06 21:25
UKO

Strategic Overview

Status
Patched in 1.12.19
Affected Plugin
WS Form LITE – Drag & Drop Contact Form Builder
Affected Version
<= 1.12.18
CVSS
7.2High
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation
CVE
CVE-2026-122231
View all WS Form LITE – Drag & Drop Contact Form Builder vulnerabilities

At a glance

CVE-2026-122231 is a high-severity Improper Neutralization of Input During Web Page Generation vulnerability in the WS Form LITE WordPress plugin, affecting versions <= 1.12.18. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.12.19; sites on affected versions should update now. Disclosed November 2026, reported by UKO.

Vulnerability Overview

The WS Form LITE – Drag & Drop Contact Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'field_<id>[0][0]' parameter in all versions up to, and including, 1.12.18 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is possible because the client-side esc_html() helper returns any non-string value unchanged, allowing a nested-array payload coerced via Array.prototype.toString to reach jQuery .append() unescaped.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-79: Improper Neutralization of Input During Web Page Generation

WS Form LITE <= 1.12.18 carries this weakness at esc_html(), and reaching it takes no account at all. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For WS Form LITE the fix is 1.12.19: builds <= 1.12.18 are affected, anything from 1.12.19 onward is not.

Remediation

Update to version 1.12.19, or a newer patched version

How does WordSec protect against this?

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WS Form LITE 1.12.19 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-122231https://www.wordfence.com/threat-intel/vulnerabilities/id/7996ce73-32d7-49d5-b47b-71f9fc106d3dhttps://nvd.nist.gov/vuln/detail/CVE-2026-122231

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C