---
id: CVE-2026-3142
title: >-
  The Pinterest Site Verification plugin using Meta Tag plugin for WordPress is
  vulnerable to Stored Cross-Site Scripting via the 'post_var' parameter in
  versions up to, and including, 1.8 due to insufficient input sanitization and
  output …
summary: >-
  The Pinterest Site Verification plugin using Meta Tag plugin for WordPress is
  vulnerable to Stored Cross-Site Scripting via the 'post_var' parameter in
  versions up to, and including, 1.8 due to insufficient input sanitization and
  output …
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
published: '2026-04-08'
updated: '2026-07-25'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-3142'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/pinterest-site-verification/tags/1.8/PinterestMetaTagSiteVerification.php#L132
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/pinterest-site-verification/tags/1.8/PinterestMetaTagSiteVerification.php#L160
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/pinterest-site-verification/tags/1.8/PinterestMetaTagSiteVerification.php#L172
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/pinterest-site-verification/tags/1.8/PinterestMetaTagSiteVerification.php#L180
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/pinterest-site-verification/tags/1.8/PinterestMetaTagSiteVerification.php#L214
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/pinterest-site-verification/tags/1.8/PinterestMetaTagSiteVerification.php#L92
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/pinterest-site-verification/trunk/PinterestMetaTagSiteVerification.php#L160
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/7ccb7534-b588-4bdd-9627-0e38c0ee5e8a?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.002
epssPercentile: 0.10096
ingestedAt: '2026-07-25T23:05:58.904Z'
---

## Overview

The Pinterest Site Verification plugin using Meta Tag plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'post_var' parameter in versions up to, and including, 1.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, 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.