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TI-2026-83534 Aliases CVE-2026-107711GHSA-2c44-25vc-hm3p

Stored cross-site scripting in FlexStock WooCommerce plugin

Priority LOW 28CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The FlexStock Product Stock Sync with Google Sheets for WooCommerce plugin by wppool for WordPress, in all versions up to and including 3.17.2, contains stored cross-site scripting (CWE-79) in the products post_content parameter due to insufficient input sanitization and output escaping. An authenticated attacker with subscriber-level access or above can inject scripts that run when a user opens an injected page. Any subscriber can exploit this because the plugin exposes its REST bearer token on the Dashboard without a capability check.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00342 27th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
WPPOOLFlexStock – Product Stock Sync with Google Sheets for WooCommerceup to 3.17.2—No fix listedCNA
  • FlexStock – Product Stock Sync with Google Sheets for WooCommerce VendorWPPOOL Affected up to 3.17.2 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for FlexStock Product Stock Sync with Google Sheets for WooCommerce.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Timeline

  1. 2026-10-31 Threatist record created from CVE-2026-107711
  2. 2026-10-31 Alias added: GHSA-2c44-25vc-hm3p
  3. 2026-11-01 Priority changed: MEDIUM → LOW
  4. 2026-11-01 CISA SSVC decision points changed

References

Other 8

  • TI-2022-04310 WP Dark Mode < 4.0.0 - Contributor+ Stored XSS in Shortcode CVSS 3.1MEDIUM 5.4
  • TI-2023-00442 WP Dark Mode < 4.0.8 - Subscriber+ Local File Inclusion CVSS 3.1MEDIUM 4.3
  • TI-2026-22824 WordPress FormyChat plugin <= 2.15.7 - Broken Access Control vulnerability CVSS 3.1HIGH 7.5
  • TI-2023-11672 WordPress Sheets To WP Table Live Sync Plugin <= 2.12.15 is vulnerable to Cross Site Request Forgery (CSRF) CVSS 3.1HIGH 8.8
  • TI-2025-22035 WordPress FlexStock plugin <= 3.13.1 - SQL Injection Vulnerability CVSS 3.1HIGH 7.6
  • TI-2026-41316 WordPress FormyChat plugin <= 2.15.3 - Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences