CVE-2025-26999

WordPress ProfileGrid Plugin <= 5.9.4.3 - PHP Object Injection vulnerability

8.8 High

Deserialization of Untrusted Data vulnerability in Metagauss ProfileGrid profilegrid-user-profiles-groups-and-communities allows Object Injection.This issue affects ProfileGrid : from n/a through <= 5.9.4.3.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.70%Up 0.7 points since Mar 4, 2025

What each source reports

CVE List Score used 8.8

WordPress ProfileGrid Plugin <= 5.9.4.3 - PHP Object Injection vulnerability

Record: CVE-2025-26999
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-502
Updated: 2026-11-02

EUVDEUVD-2025-5598 8.8

Record: EUVD-2025-5598
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-jmjv-7fjg-3vrm 8.8

Deserialization of Untrusted Data vulnerability in Metagauss ProfileGrid allows Object Injection...

Deserialization of Untrusted Data vulnerability in Metagauss ProfileGrid allows Object Injection. This issue affects ProfileGrid : from n/a through 5.9.4.3.

Record: GHSA-jmjv-7fjg-3vrm
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-502
Updated: 2026-11-02

NVD 8.8

Record: CVE-2025-26999
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-502
Updated: 2026-11-02

Affected products

metagauss profilegrid

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-26999 is a high vulnerability (CVSS 8.8) in Metagauss Profilegrid, published March 3, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.70%, the 53rd percentile. No source names a fixed version.