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CVE-2026-14956 – Unauthenticated Privilege Escalation to Administrator – Bricksforge WordPress Pl…

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Summary

CVE-2026-14956 is a critical unauthenticated privilege escalation vulnerability in the Bricksforge plugin for WordPress, affecting all versions up to and including 3.1.8.6. By submitting a specially crafted request to a publicly accessible Bricksforge Pro Forms registration form, an unauthenticated remote attacker can register a new WordPress administrator account, resulting in full site compromise. This vulnerability carries a CVSS v3.1 base score of 9.8 (Critical).

Technical details

  • Root cause: The Pro Forms User Registration action fails to properly validate the fieldIds parameter, allowing attacker-supplied field IDs to be injected into the plugin’s trusted form-field whitelist without authorization.
  • Trigger condition: The target WordPress site must have a publicly accessible Bricksforge Pro Forms element configured with the User Registration action enabled.
  • Attack vector: A remote, unauthenticated attacker sends a crafted HTTP request to the exposed Pro Forms registration endpoint, manipulating the fieldIds parameter to bypass the intended whitelist validation and register a new account with WordPress administrator privileges.
  • Impact: Full site takeover — the attacker-controlled administrator account can be leveraged to install malicious plugins, upload PHP webshells, modify theme code, and exfiltrate sensitive data stored in the WordPress database.

Affected software

  • Bricksforge plugin for WordPress, all versions up to and including 3.1.8.6

Severity

  • CVSS v3.1 Base Score: 9.8 (Critical)
  • Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • No patched version has been confirmed at the time of publication (2026-07-17). Monitor the official Bricksforge changelog at bricksforge.io/version-changelog/ for a security release and apply it immediately upon availability.
  • Immediate workaround: Audit all WordPress sites running Bricksforge and disable or unpublish any Pro Forms elements configured with the User Registration action on publicly accessible pages until an official patch is available.
  • Sites that do not use the Pro Forms User Registration action are not directly exploitable via this vulnerability path, but upgrading once a patch is released remains strongly recommended.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts and recommends immediate patching. Potentially affected assets are outlined in this post.

References

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