# Payment forms, Buy now buttons, and Invoicing System | GetPaid <= 2.8.62 - Unauthenticated Stored Cross-Site Scripting via Customer Email

- **ID:** WPSEC-2026-1609
- **Plugin:** Payment forms, Buy now buttons, and Invoicing System | GetPaid (`invoicing`), https://wordpress.org/plugins/invoicing/
- **Affected versions:** from 2.8.0 before 2.8.63
- **Fixed in:** 2.8.63 (Update to 2.8.63 or later.)
- **Severity:** Medium 6.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
- **Weakness:** CWE-79
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-10-25)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/invoicing
- **Fix released:** 2026-10-23
- **Published:** 2026-10-24
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1609/

## Description

The Payment forms, Buy now buttons, and Invoicing System | GetPaid plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the customer email address in versions 2.8.0 to, and including, 2.8.62, due to insufficient output escaping of the email on the GetPaid > Customers admin list. This makes it possible for unauthenticated attackers who check out with a crafted email address to inject arbitrary web scripts that will execute whenever an administrator views the customers list.

## References

- https://wpsec.com/vuln/WPSEC-2026-1609/
- https://plugins.svn.wordpress.org/invoicing/tags/2.8.63/
- https://wordpress.org/plugins/invoicing/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1609/

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.