CVE-2026-3142
Received Received - Intake
Stored XSS in Pinterest Site Verification WordPress Plugin Allows Script Injection

Publication date: 2026-04-08

Last updated on: 2026-04-08

Assigner: Wordfence

Description
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.
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Meta Information
Published
2026-04-08
Last Modified
2026-04-08
Generated
2026-06-19
AI Q&A
2026-04-08
EPSS Evaluated
2026-06-18
NVD
CVE-2026-3142
EUVD
EUVD-2026-20101
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
pinterest site_verification_plugin to 1.8 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

The Pinterest Site Verification plugin using Meta Tag plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in versions up to and including 1.8. This vulnerability arises because the plugin does not properly sanitize or escape input provided via the 'post_var' parameter.

As a result, authenticated users with subscriber-level access or higher can inject malicious web scripts into pages. These scripts will execute whenever any user accesses the infected page.

Impact Analysis

This vulnerability can allow attackers with subscriber-level access to inject arbitrary scripts into the website. These scripts can execute in the context of other users visiting the affected pages.

  • Stealing user session cookies or credentials.
  • Performing actions on behalf of other users without their consent.
  • Defacing the website or redirecting users to malicious sites.
  • Compromising user trust and website integrity.
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