wppool FlexStock Plugin up to 3.17.2 on WordPress REST endpoint admin_enqueue_scripts products[].post_content cross site scripting

Summaryinfo

A vulnerability was found in wppool FlexStock Plugin up to 3.17.2 and classified as problematic. This affects the function admin_enqueue_scripts of the component REST endpoint. The manipulation of the argument products[].post_content results in cross site scripting. This vulnerability is reported as CVE-2026-107711. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as problematic has been found in wppool FlexStock Plugin up to 3.17.2. Affected is the function admin_enqueue_scripts of the component REST endpoint. The manipulation of the argument products[].post_content with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. CVE summarizes:

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.

The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-107711 since 10/08/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• wppool

Name

• FlexStock Plugin

Version

• 3.17.0
• 3.17.1
• 3.17.2

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CPE 2.2info

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