CVE-2025-11748

Groups <= 3.7.0 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary Group Join

4.3 Medium

The Groups plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.0 via the 'group_id' parameter of the group_join function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to register for groups other than ones set in the shortcode.

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: None
Integrity: Low
Availability: None

Exploit likelihood

0.23%Up 0.2 points since Nov 8, 2025

What each source reports

CVE List Score used 4.3

Groups <= 3.7.0 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary Group Join

Record: CVE-2025-11748
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness: CWE-639
Updated: 2026-11-02

EUVDEUVD-2025-38353 4.3

Record: EUVD-2025-38353
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-jcx9-wjx2-ccx2 4.3

The Groups plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions...

The Groups plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 6.7.0 via the 'group_id' parameter of the group_join function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to register for groups other than ones set in the shortcode.

Record: GHSA-jcx9-wjx2-ccx2
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness: CWE-639
Updated: 2026-11-02

NVD 4.3

Record: CVE-2025-11748
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness: CWE-639
Updated: 2026-11-02

Affected products

itthinx groups

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-2025-11748 is a medium vulnerability (CVSS 4.3) in Itthinx Groups, published November 8, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.23%, the 14th percentile. No source names a fixed version.