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Description

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.

PUBLISHED Reserved 2025-10-14 | Published 2025-11-08 | Updated 2025-11-08 | Assigner Wordfence




MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Problem types

CWE-639 Authorization Bypass Through User-Controlled Key

Product status

Default status
unaffected

* (semver)
affected

Timeline

2025-11-07:Disclosed

Credits

Angus Girvan finder

References

www.wordfence.com/...-d5ca-4700-bc61-f2dd20f06fcf?source=cve

plugins.trac.wordpress.org/...ws/class-groups-shortcodes.php

plugins.trac.wordpress.org/...40groups&sfp_email=&sfph_mail=

cve.org (CVE-2025-11748)

nvd.nist.gov (CVE-2025-11748)

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