---
id: CVE-2026-13756
title: >-
  The WP Grid Builder plugin for WordPress is vulnerable to Privilege Escalation
  in all versions up to, and including, 2.3.3
summary: >-
  The WP Grid Builder plugin for WordPress is vulnerable to Privilege Escalation
  in all versions up to, and including, 2.3.3. This is due to missing
  authorization and meta key validation in the `update()` handler for the
  `/wp-json/wpgb/v2/…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-269
published: '2026-07-11'
updated: '2026-07-11'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-13756'
references:
  - url: 'https://docs.wpgridbuilder.com/changelog/'
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/6a42e0e8-a8c7-4bc5-80ca-5ef69d1f0b6c?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00442
epssPercentile: 0.35709
ingestedAt: '2026-07-11T22:16:01.063Z'
---

## Overview

The WP Grid Builder plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 2.3.3. This is due to missing authorization and meta key validation in the `update()` handler for the `/wp-json/wpgb/v2/metadata` REST endpoint. This makes it possible for authenticated attackers, with Subscriber-level access and above, to elevate their privileges to Administrator by updating their own `wp_capabilities` user meta with a crafted nested array payload.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.