The ProfileGrid plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 5.9.4.3 via deserialization of untrusted input. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
CVE-2025-26999 is a high severity with CVSS 8.8 Vulnerability issue affecting the Plugin ProfileGrid – User Profiles, Groups and Communities. It affects Versions up to 5.9.4.3 and is fixed in 5.9.4.4.
CVE-2025-26999 is tracked for the Plugin ProfileGrid – User Profiles, Groups and Communities as high severity with CVSS 8.8. The affected range is Versions up to 5.9.4.3. Update ProfileGrid – User Profiles, Groups and Communities to 5.9.4.4 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
profilegrid-user-profiles-groups-and-communities
View on wordpress.org
|
| CVE | CVE-2025-26999 |
| Patched Versions |
5.9.4.4
|
| Affected Versions |
Versions up to 5.9.4.3
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
ProfileGrid <= 5.7.8 - Unauthenticated SQL Injection
ProfileGrid <= 5.7.8 - Authenticated (Subscriber+) SQL Injection
ProfileGrid – User Profiles, Groups and Communities <= 5.9.4.5 - Authenticated (Subscriber+) PHP Object Injection
ProfileGrid – User Profiles, Groups and Communities <= 5.8.9 - Authenticated (Subscriber+) Authorization Bypass to Privilege Escalation
ProfileGrid <= 5.5.1 - Authenticated (Subscriber+) Arbitrary Option Update
ProfileGrid <= 5.3.0 - Missing Authorization to Arbitrary Password Reset
ProfileGrid – User Profiles, Memberships, Groups and Communities < 2.8.6 - Remote Code Execution
ProfileGrid <= 5.5.2 - Missing Authorization to Arbitrary Group Option Modification and Privilege Escalation
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