# Security Advisory

- URL: https://blog.hostbillapp.com/2026/08/31/security-advisory-4/
- Published: 2026-08-31 (updated 2026-10-15)
- Author: Dominika Grzesik
- Categories: Security
- Tags: security advisory

> A security update for HostBill has been released for all HostBill versions – please update your HostBill to the most recent version.

A security update for HostBill has been released for all HostBill versions – please update your HostBill to the most recent version.

We have identified a security issue that affects all HostBill versions until 2026-08-31 release.  This issue involves a High-severity Cross-Site Scripting (XSS) vulnerability.

**Resolution:**

To mitigate this issue please update your HostBill to the most recent release, version 2026-08-31, either manually or using the Auto-Update plugin.

We do not have any basis to think the issue is known in public.