# Burst Statistics <= 3.7.3 - Unauthenticated Security Plugin Bypass via REST API Optimizer

- **ID:** WPSEC-2026-2011
- **Plugin:** Burst Statistics – Simple WordPress Analytics (Google Analytics Alternative) (`burst-statistics`), https://wordpress.org/plugins/burst-statistics/
- **Affected versions:** all versions before 3.7.4
- **Fixed in:** 3.7.4 (Update to 3.7.4 or later.)
- **Severity:** Medium 4.8 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)
- **Weakness:** CWE-693
- **Usage among sites WPSec scans:** plugin High, affected versions High (as of 2026-10-30)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/burst-statistics
- **Fix released:** 2026-10-29
- **Published:** 2026-10-30
- **URL:** https://wpsec.com/vuln/WPSEC-2026-2011/

## Description

The Burst Statistics plugin for WordPress is vulnerable to a protection mechanism bypass via the REST API Optimizer must-use plugin in all versions up to, and including, 3.7.3, due to the optimizer treating any request whose URL path contains '/wp-json/burst/v1' as a Burst REST request, regardless of the script that handles it. Because of this, requests to other entry points that carry the route as extra path info, such as /wp-login.php/wp-json/burst/v1/x or /xmlrpc.php/wp-json/burst/v1/x on servers that pass extra path information to PHP scripts, such as Apache, also have most other active plugins unloaded (all except Burst's own and a short keep list). This makes it possible for unauthenticated attackers to run login and XML-RPC requests without the security plugins that would normally protect them, such as two-factor authentication, login attempt limiting or XML-RPC blocking. The optimizer is installed automatically when the mu-plugins directory is writable, and the impact depends on which security plugins the site relies on.

## References

- https://wpsec.com/vuln/WPSEC-2026-2011/
- https://plugins.svn.wordpress.org/burst-statistics/tags/3.7.4/
- https://wordpress.org/plugins/burst-statistics/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-2011/

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.