CVE-2026-107711 (GCVE-0-2026-107711)
Vulnerability from cvelistv5 – Published: 2026-10-31 09:29 – Updated: 2026-10-31 09:29
VLAI
EPSS
VEX
Title
FlexStock <= 3.17.2 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'post_content' Parameter via REST update endpoint
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. 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.
Severity
6.4 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation
Assigner
References
8 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| wppool | FlexStock – Product Stock Sync with Google Sheets for WooCommerce |
Affected:
0 , ≤ 3.17.2
(semver)
|
guessed |
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}
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"providerMetadata": {
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"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"shortName": "Wordfence"
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"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b03cabc6-1cbe-4aa2-8eae-cea30d01b811?source=cve"
},
{
"url": "https://plugins.trac.wordpress.org/browser/stock-sync-with-google-sheet-for-woocommerce/tags/3.17.2/includes/models/class-product.php#L1500"
},
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"url": "https://plugins.trac.wordpress.org/browser/stock-sync-with-google-sheet-for-woocommerce/tags/3.17.2/includes/classes/class-api.php#L79"
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"url": "https://plugins.trac.wordpress.org/browser/stock-sync-with-google-sheet-for-woocommerce/tags/3.17.2/includes/classes/class-hooks.php#L1184"
},
{
"url": "https://plugins.trac.wordpress.org/browser/stock-sync-with-google-sheet-for-woocommerce/tags/3.17.2/includes/classes/class-app.php#L458"
},
{
"url": "https://plugins.trac.wordpress.org/browser/stock-sync-with-google-sheet-for-woocommerce/tags/3.17.2/includes/helper/functions.php#L139"
},
{
"url": "https://plugins.trac.wordpress.org/changeset/3768111/stock-sync-with-google-sheet-for-woocommerce/trunk/includes/models/class-product.php"
}
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"time": "2026-10-12T16:38:03.000Z",
"value": "Vendor Notified"
},
{
"lang": "en",
"time": "2026-10-30T21:11:02.000Z",
"value": "Disclosed"
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],
"title": "FlexStock \u003c= 3.17.2 - Authenticated (Subscriber+) Stored Cross-Site Scripting via \u0027post_content\u0027 Parameter via REST update endpoint"
}
},
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"dateReserved": "2026-10-08T17:17:32.800Z",
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"nvd": {
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}
],
"id": "CVE-2026-107711",
"lastModified": "2026-10-31T10:16:37.370",
"metrics": {
"cvssMetricV31": [
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"attackVector": "NETWORK",
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}
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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