Stored cross-site scripting in Product Addons for Woocommerce
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- High
- 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 Product Addons for Woocommerce (Product Options with Custom Fields) plugin by acowebs is affected in all versions up to and including 3.1.8. Insufficient input sanitization and output escaping (CWE-79) let stored web scripts be injected through the type field parameter. An authenticated attacker with shop manager access or higher can inject scripts that run when a user opens an injected page.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
The Product Addons for Woocommerce – Product Options with Custom Fields plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'fields[section][fields][row][col][type]' parameter in all versions up to, and including, 3.1.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with shop manager-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Why it matters now
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
Remediation
The sources list no fixed version for Product Addons for Woocommerce (Product Options with Custom Fields).
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-28 Threatist record created from CVE-2026-109988
- 2026-10-28 Alias added: GHSA-xqcg-xmfg-qf64
- 2026-10-29 CISA SSVC decision points changed
References
Other 8
- https://www.wordfence.com/threat-intel/vulnerabilities/id/99c24e6f-396a-45bd-b16e-cb3b30aff25c?source=cve
- https://plugins.trac.wordpress.org/browser/woo-custom-product-addons/tags/3.1.8/templates/cart/cart-item-data.php#L14
- https://plugins.trac.wordpress.org/browser/woo-custom-product-addons/tags/3.1.8/includes/backend/api.php#L237
- https://plugins.trac.wordpress.org/browser/woo-custom-product-addons/tags/3.1.8/includes/helper.php#L284
- https://plugins.trac.wordpress.org/browser/woo-custom-product-addons/tags/3.1.8/includes/process/process.php#L262
- https://plugins.trac.wordpress.org/browser/woo-custom-product-addons/tags/3.1.8/includes/process/cart.php#L109
- https://wordpress.org/plugins/woo-custom-product-addons/
- https://plugins.trac.wordpress.org/changeset/3756829/woo-custom-product-addons/trunk/templates/cart/cart-item-data.php
More acowebs vulnerabilities
- TI-2024-11231 Product Labels For Woocommerce < 1.5.9 - Admin+ SQLi CVSS 3.1MEDIUM 4.1
- TI-2024-09859 Product Labels For Woocommerce < 1.5.11 - Admin+ SQLi CVSS 3.1MEDIUM 4.1
- TI-2026-03464 Woocommerce Custom Product Addons Pro <= 5.4.1 - Unauthenticated Remote Code Execution via Custom Pricing Formula CVSS 3.1CRITICAL 9.8
- TI-2025-30085 WordPress Dynamic Pricing With Discount Rules for WooCommerce plugin <= 4.5.9 - Arbitrary Code Execution vulnerability CVSS 3.1CRITICAL 9.1
- TI-2024-01650 PDF Invoices and Packing Slips For WooCommerce <= 1.3.7 - Authenticated (Subscriber+) PHP Object Injection CVSS 3.1HIGH 8.8
- TI-2025-38331 WordPress Product Table For WooCommerce plugin <= 1.2.4 - PHP Object Injection vulnerability CVSS 3.1HIGH 8.8
Sources
- CVE-2026-109988 · CVE Program
- CVE-2026-109988 · NVD
- FIRST EPSS
- GHSA-xqcg-xmfg-qf64 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences