CVE-2026-107711 wppool CVE debrief

Who should care

WordPress administrators and users with subscriber-level access and above who use the FlexStock – Product Stock Sync with Google Sheets for WooCommerce plugin should assess their exposure and take steps to prevent exploitation.

Why it matters

The CVE-2026-107711 vulnerability in the FlexStock – Product Stock Sync with Google Sheets for WooCommerce plugin for WordPress allows authenticated attackers to inject arbitrary web scripts, potentially leading to cross-site scripting attacks.

• Authenticated attackers with subscriber-level access and above can inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page
• 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
• The REST endpoint's permission_callback validates only that bearer token rather than performing a current_user_can() capability check

Technical summary

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.

Defensive priority

Authenticated attackers with subscriber-level access and above can inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Recommended defensive actions

• Review and update the FlexStock – Product Stock Sync with Google Sheets for WooCommerce plugin to version greater than 3.17.2
• Restrict access to the plugin's REST endpoint to prevent unauthorized users from injecting malicious scripts
• Monitor user input and output to prevent cross-site scripting attacks
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its description, CVSS score, and affected versions. 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. Authenticated attackers with subscriber-level access and above can inject arbitrary web scripts in pages that will execute

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.