Vulnerability · Published Sep 16, 2026 · Assigned by Wordfence
CVE-2026-12793JetFormBuilder <= 3.6.2 - Unauthenticated Privilege Escalation via '_jet_engine_booking_form_id' Parameter
Critical 9.8
In plain English
A critical-severity privilege mismanagement in JetFormBuilder — Dynamic Blocks Form Builder from jetmonsters. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
The JetFormBuilder — Dynamic Blocks Form Builder plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.6.2. This is due to the plugin not validating that a submitted form ID belongs to a JetFormBuilder form before parsing the referenced post's content as form schema and executing an Advanced Validation server-side callback. This makes it possible for unauthenticated attackers to create a new administrator-level user account.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| jetmonsters | JetFormBuilder — Dynamic Blocks Form Builder | 0 – through 3.6.2 |
Weakness: CWE-269 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H