Groups <= 3.7.0 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary Group Join
Priority LOW 20CWE-639Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-639.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00234 14th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-11748
- 2026-10-03 Alias added: GHSA-jcx9-wjx2-ccx2
References
Other 3
- https://www.wordfence.com/threat-intel/vulnerabilities/id/d0f6d28a-d5ca-4700-bc61-f2dd20f06fcf?source=cve
- https://plugins.trac.wordpress.org/browser/groups/trunk/lib/views/class-groups-shortcodes.php
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3387846%40groups&new=3387846%40groups&sfp_email=&sfph_mail=
More itthinx vulnerabilities
- TI-2026-73984 Object injection in itthinx Affiliates WordPress plugin CVSS 3.1CRITICAL 9.8
- TI-2026-53915 Groups <= 4.6.0 - Authenticated (Subscriber+) Privilege Escalation via 'groups_join' Shortcode CVSS 3.1HIGH 8.8
- TI-2026-00352 Groups <= 3.10.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'groups_group_info' Shortcode CVSS 3.1MEDIUM 6.4
Sources
- CVE-2025-11748 · CVE Program
- CVE-2025-11748 · NVD
- FIRST EPSS
- GHSA-jcx9-wjx2-ccx2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences