CVE-2026-109988 json
Product Addons for Woocommerce <= 3.1.8 - Authenticated (Shop Manager+) Stored Cross-Site Scripting via 'type' Field Parameter
published 12d ago modified 12d ago also EUVD-2026-111604
- cvss
- 4.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 10%
- public exploits
- 0
- none known
Summary
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.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 12d ago
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.4 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N |
Affected products
- acowebs Product Addons for Woocommerce – Product Options with Custom Fields
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/99c24e6f-396a-45bd-b16e-cb3b30aff25c?source=cve
- plugins.trac.wordpress.org /browser/woo-custom-product-addons/tags/3.1.8/templates/cart/cart-item-data.php#L14
- plugins.trac.wordpress.org /browser/woo-custom-product-addons/tags/3.1.8/includes/backend/api.php#L237
- plugins.trac.wordpress.org /browser/woo-custom-product-addons/tags/3.1.8/includes/helper.php#L284
- plugins.trac.wordpress.org /browser/woo-custom-product-addons/tags/3.1.8/includes/process/process.php#L262
- plugins.trac.wordpress.org /browser/woo-custom-product-addons/tags/3.1.8/includes/process/cart.php#L109
- wordpress.org /plugins/woo-custom-product-addons/
- plugins.trac.wordpress.org /changeset/3756829/woo-custom-product-addons/trunk/templates/cart/cart-item-data.php
Sources
- CVE List CVE-2026-109988
- NVD CVE-2026-109988
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.