# PAYONE WooCommerce <= 2.11.0 - Authenticated (Shop Manager+) Stored Cross-Site Scripting via Credit Card Gateway Settings

- **ID:** WPSEC-2026-3058
- **Plugin:** PAYONE WooCommerce (`bs-payone-woocommerce`), https://wordpress.org/plugins/bs-payone-woocommerce/
- **Affected versions:** all versions before 2.12.0
- **Fixed in:** 2.12.0 (Update to 2.12.0 or later.)
- **Severity:** Medium 5.5 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N)
- **Weakness:** CWE-79
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-11-13)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/bs-payone-woocommerce
- **Fix released:** 2026-11-12
- **Published:** 2026-11-13
- **URL:** https://wpsec.com/vuln/WPSEC-2026-3058/

## Description

The PAYONE WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the credit card gateway settings in all versions up to, and including, 2.11.0. This is due to field style, type, size and iframe dimension settings being interpolated into inline JavaScript on the classic checkout page without escaping. This makes it possible for authenticated attackers with Shop Manager-level access or higher, who lack the unfiltered_html capability, to inject arbitrary web scripts that execute whenever a user visits the checkout page.

## References

- https://wpsec.com/vuln/WPSEC-2026-3058/
- https://plugins.svn.wordpress.org/bs-payone-woocommerce/tags/2.12.0/
- https://wordpress.org/plugins/bs-payone-woocommerce/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-3058/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.