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OpenAdvisories
Medium · 4.3 CVE-2025-11748 EUVD-2025-38353GHSA-jcx9-wjx2-ccx2

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

Published Nov 8, 2025 · Updated Apr 8, 2026 · Assigned by Wordfence

Description

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.

Affected products

VendorProductAffectedFixed
itthinx Groups ≤ 3.7.0 —

References