---
id: CVE-2012-20003
title: Custom Tables WordPress Plugin < 3.4.6 Reflected XSS via iframe.php
summary: >-
  Custom Tables plugin for WordPress before 3.4.6 contains a reflected
  cross-site scripting vulnerability that allows unauthenticated attackers to
  inject scripts through the unsanitized 'key' parameter in iframe.php.
  Attackers can craft GE…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-79
vendor: Web Updates KMU
product: Custom Tables
affected:
  - custom_tables < 3.4.6
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T20:31:19.033Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2012-20003'
references:
  - url: 'https://www.exploit-db.com/exploits/37482'
    label: EDB-37482
  - url: 'https://wpscan.com/vulnerability/211a4286-4747-4b62-acc3-fd9a57b06252'
    label: WPScan Advisory
  - url: >-
      https://www.acunetix.com/vulnerabilities/web/wordpress-plugin-custom-tables-key-parameter-cross-site-scripting-3-4-4/
    label: Acunetix Advisory
  - url: >-
      https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/wordpress/wp-custom-tables-xss.yaml
    label: Nuclei Template
  - url: 'https://wordpress.org/plugins/custom-tables/'
    label: WordPress Download Page
  - url: >-
      https://www.vulncheck.com/advisories/custom-tables-wordpress-plugin-3.4.6-reflected-xss-via-iframe-php
    label: >-
      VulnCheck Advisory: Custom Tables WordPress Plugin < 3.4.6 Reflected XSS
      via iframe.php
tags:
  - cve.org
ingestedAt: '2026-10-20T21:19:21.268Z'
---

## Overview

Custom Tables plugin for WordPress before 3.4.6 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts through the unsanitized 'key' parameter in iframe.php. Attackers can craft GET requests to /wp-content/plugins/custom-tables/iframe.php with s=1 and a malicious key value to execute script in victims' browsers and steal cookies. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-20.

## Affected

- `custom_tables < 3.4.6`

## Remediation

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