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CVE-2026-107711

MEDIUM 6.4 CVSS 3.1
Published
October 31, 2026
Last modified
November 2, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Description

The FlexStock – Product Stock Sync with Google Sheets for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'products[].post_content' parameter in all versions up to, and including, 3.17.2 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. This is exploitable by any Subscriber-level user because the plugin's admin_enqueue_scripts callback exposes the REST bearer token in the Dashboard page source via wp_localize_script() without a capability check, and the REST endpoint's permission_callback validates only that bearer token rather than performing a current_user_can() capability check.

Affected WordPress components

  • FlexStock – Product Stock Sync with Google Sheets for WooCommerce Plugin · stock-sync-with-google-sheet-for-woocommerce
    Confirmed match Active
    Up to and including 3.17.2
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • wppool FlexStock – Product Stock Sync with Google Sheets for WooCommerce — Up to and including 3.17.2

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/stock-sync-with-google-sheet-for-woocommerce/tags/3.17.2/includes/classes/class-api.php#L577
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/stock-sync-with-google-sheet-for-woocommerce/tags/3.17.2/includes/classes/class-api.php#L79
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/stock-sync-with-google-sheet-for-woocommerce/tags/3.17.2/includes/classes/class-app.php#L458
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/stock-sync-with-google-sheet-for-woocommerce/tags/3.17.2/includes/classes/class-hooks.php#L1184
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/stock-sync-with-google-sheet-for-woocommerce/tags/3.17.2/includes/helper/functions.php#L139
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/stock-sync-with-google-sheet-for-woocommerce/tags/3.17.2/includes/models/class-product.php#L1500
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3768111/stock-sync-with-google-sheet-for-woocommerce/trunk/includes/models/class-product.php
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/b03cabc6-1cbe-4aa2-8eae-cea30d01b811?source=cve
  • nvd.nist.gov Official NVD record