CVE-2026-19221

Forminator Forms – Contact Form, Payment Form & Custom Form Builder < 1.57.0.5 - Authenticated (Administrator+) Remote Code Execution

2026-08-27 00:00
Jakub Herman

Strategic Overview

Status
Patched in 1.57.0.5
Affected Plugin
Forminator Forms – Contact Form, Payment Form & Custom Form Builder
Affected Version
< 1.57.0.5
CVSS
7.2High
Weakness type
CWE-94 · Improper Control of Generation of Code ('Code Injection')
CVE
CVE-2026-19221
View all Forminator Forms – Contact Form, Payment Form & Custom Form Builder vulnerabilities

At a glance

CVE-2026-19221 is a high-severity Improper Control of Generation of Code ('Code Injection') vulnerability in the Forminator Forms WordPress plugin, affecting versions < 1.57.0.5. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account at Administrator level or above. The issue is fixed in version 1.57.0.5; sites on affected versions should update now. Disclosed August 2026, reported by Jakub Herman.

Vulnerability Overview

The Forminator Forms – Contact Form, Payment Form & Custom Form Builder plugin for WordPress is vulnerable to Remote Code Execution in all versions up to 1.57.0.5. This is due to insufficient validation of user supplied input before it is executed. This makes it possible for authenticated attackers, with administrator-level access and above, to execute arbitrary code on the server.

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 interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-94: Improper Control of Generation of Code ('Code Injection')

Reaching this weakness in Forminator Forms < 1.57.0.5 takes an account at Administrator level or above. Code injection means input from a request reaches a language construct that evaluates code, so the attacker's text is executed rather than treated as data.

The injected code runs with the web server's privileges, giving the attacker the same access to the database and filesystem as WordPress itself. For Forminator Forms the fix is 1.57.0.5: builds < 1.57.0.5 are affected, anything from 1.57.0.5 onward is not.

Remediation

Update to version 1.57.0.5, or a newer patched version

How does WordSec protect against this?

An attacker needs Administrator access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: Forminator Forms 1.57.0.5 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Scanner
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-19221https://www.wordfence.com/threat-intel/vulnerabilities/id/fcae7cb5-d333-4bde-a43b-ea3ef3b023fahttps://nvd.nist.gov/vuln/detail/CVE-2026-19221

Related records

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