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TI-2026-23752 Aliases CVE-2026-30927GHSA-7pfv-hr63-h7cw

Admidio: Event participation IDOR - non-leaders can register other users for events via user_uuid parameter

Priority LOW 24CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-639.

Summary

Admidio is an open-source user management solution. Prior to 5.0.6, in modules/events/events_function.php, the event participation logic allows any user who can participate in an event to register OTHER users by manipulating the user_uuid GET parameter. The condition uses || (OR), meaning if possibleToParticipate() returns true (event is open for participation), ANY user - not just leaders - can specify a different user_uuid and register/cancel participation for that user. The code then operates on $user->getValue('usr_id') (the target user from user_uuid) rather than the current user. This vulnerability is fixed in 5.0.6.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00285 21st percentileScored 2026-11-07
Fix Fixed admidio (Admidio): 5.0.6admidio/admidio (Packagist): 5.0.6

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

VendorProductAffected versionsFixed inStatusSource
Admidioadmidiobefore 5.0.65.0.6Patch availableCNA
—admidio/admidio (Packagist)before 5.0.65.0.6Patch availableGHSA-7pfv-hr63-h7cw
  • admidio VendorAdmidio Affected before 5.0.6 Fixed in 5.0.6 Patch available CNA
  • admidio/admidio (Packagist) Vendor— Affected before 5.0.6 Fixed in 5.0.6 Patch available GHSA-7pfv-hr63-h7cw

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:admidio:admidio:*:*:*:*:*:*:*:*before 5.0.6VulnerableAdmidio
  • cpe:2.3:a:admidio:admidio:*:*:*:*:*:*:*:* Versions before 5.0.6 Vulnerable ·Admidio

Remediation

  • Fix · CNA admidio (Admidio) Fixed in 5.0.6
  • Fix · GHSA-7pfv-hr63-h7cw admidio/admidio (Packagist) Fixed in 5.0.6 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-30927
  2. 2026-10-03 Alias added: GHSA-7pfv-hr63-h7cw

References

Patch 1

Advisory 2

Other 2

  • TI-2026-25286 Admidio is Missing Authorization and CSRF Protection on Document and Folder Deletion CVSS 3.1CRITICAL 9.1
  • TI-2024-25222 Admidio has Blind SQL Injection in ecard_send.php CVSS 3.1CRITICAL 10.0
  • TI-2024-25764 Admidio Vulnerable to RCE via Arbitrary File Upload in Message Attachment CVSS 3.1CRITICAL 9.1
  • TI-2026-25247 Admidio: Unrestricted File Upload via CSRF Token Validation Bypass in Documents & Files Module CVSS 3.1HIGH 8.8
  • TI-2026-26667 Admidio: Unauthenticated Access to Role-Restricted documents via neutralized .htaccess CVSS 3.1HIGH 7.5
  • TI-2026-25282 Admidio: Second-Order SQL Injection via List Configuration (lsc_special_field, lsc_sort, lsc_filter) CVSS 3.1HIGH 8.0
See all 31 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences