# BuddyPress <= 11.6.2 - Unauthenticated Sensitive Information Exposure of Hidden Groups via REST API

- **ID:** WPSEC-2026-1558
- **Plugin:** BuddyPress (`buddypress`), https://wordpress.org/plugins/buddypress/
- **Affected versions:** all versions before 11.6.3
- **Fixed in:** 11.6.3 (Update to 11.6.3 or later.)
- **Severity:** Medium 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
- **Weakness:** CWE-200
- **Usage among sites WPSec scans:** plugin Medium, affected versions Medium (as of 2026-10-23)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/buddypress
- **Fix released:** 2026-10-22
- **Published:** 2026-10-23
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1558/

## Description

The BuddyPress plugin for WordPress is vulnerable to Sensitive Information Exposure via the groups REST API endpoint in all versions up to, and including, 11.6.2 due to the hidden-group exclusion only being enforced when the 'show_hidden' parameter was explicitly requested. This makes it possible for unauthenticated attackers to list hidden groups and their details, for example by supplying a status parameter in the request.

## References

- https://wpsec.com/vuln/WPSEC-2026-1558/
- https://plugins.svn.wordpress.org/buddypress/tags/11.6.3/
- https://wordpress.org/plugins/buddypress/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1558/

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.