---
id: CVE-2025-12135
title: >-
  The WPBookit plugin for WordPress is vulnerable to Stored Cross-Site Scripting
  via the 'css_code' parameter in all versions up to, and including, 1.0.6 due
  to a missing capability check on the save_custome_code() function
summary: >-
  The WPBookit plugin for WordPress is vulnerable to Stored Cross-Site Scripting
  via the 'css_code' parameter in all versions up to, and including, 1.0.6 due
  to a missing capability check on the save_custome_code() function. This makes
  it …
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
published: '2025-11-21'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T21:10:00.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-12135'
references:
  - url: 'https://github.com/d0n601/CVE-2025-12135'
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpbookit/trunk/core/admin/classes/class.wpb-admin-routes-handler.php#L15
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpbookit/trunk/core/admin/classes/class.wpb-admin-routes.php#L118
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpbookit/trunk/core/admin/classes/controllers/class.wpb-setting-controller.php#L16
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3398463%40wpbookit&new=3398463%40wpbookit&sfp_email=&sfph_mail=
    label: security@wordfence.com
  - url: 'https://ryankozak.com/posts/cve-2025-12135/'
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/7d7b2c79-c4f7-4611-a22a-685d4421a4ab?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - exploit-available
epss: 0.00286
epssPercentile: 0.19377
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/d0n601/CVE-2025-12135'
  checkedAt: '2026-10-07T21:54:50.427Z'
exploitAvailable: true
ingestedAt: '2026-10-07T21:54:15.075Z'
---

## Overview

The WPBookit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'css_code' parameter in all versions up to, and including, 1.0.6 due to a missing capability check on the save_custome_code() function. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

## Remediation

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