# ProfileGrid – User Profiles, Groups and Communities <= 6.0.0.4 - Authenticated (Subscriber+) PHP Object Injection via Profile Field Values

- **ID:** WPSEC-2026-1446
- **Plugin:** ProfileGrid – User Profiles, Groups and Communities (`profilegrid-user-profiles-groups-and-communities`), https://wordpress.org/plugins/profilegrid-user-profiles-groups-and-communities/
- **Affected versions:** all versions before 6.0.0.5
- **Fixed in:** 6.0.0.5 (Update to 6.0.0.5 or later.)
- **Severity:** High 7.5 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
- **Weakness:** CWE-502
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-10-22)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/profilegrid-user-profiles-groups-and-communities
- **Fix released:** 2026-10-21
- **Published:** 2026-10-22
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1446/

## Description

The User Profiles, Groups and Communities plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 6.0.0.4 due to deserialization of user-controlled profile field meta values with maybe_unserialize() when profiles and custom fields are rendered. This makes it possible for authenticated attackers, with subscriber-level access and above, to store a serialized string in their profile fields and inject a PHP object when the profile is displayed. No known POP chain is present in the plugin itself, but if one is available via another installed plugin or theme, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

## References

- https://wpsec.com/vuln/WPSEC-2026-1446/
- https://plugins.svn.wordpress.org/profilegrid-user-profiles-groups-and-communities/tags/6.0.0.5/
- https://wordpress.org/plugins/profilegrid-user-profiles-groups-and-communities/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1446/

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.