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CVE-2026-41657

Admidio: Cross-Organization Member Data Exposure via Permission Check Mismatch in contacts_data.php PUBLISHED

Description (CNA)

Admidio is an open-source user management solution. Prior to version 5.0.9, the contacts_data.php endpoint uses a weaker permission check (isAdministratorUsers(), requiring only rol_edit_user=true) than the frontend UI (contacts.php) which correctly requires the stronger isAdministrator() (requiring rol_administrator=true) and the contacts_show_all system setting. A user manager who is not a full administrator can directly request contacts_data.php?mem_show_filter=3 to retrieve all user records across all organizations in the Admidio instance, bypassing multi-tenant organization isolation. This issue has been patched in version 5.0.9.

Affected (CNA)

Vendor / productVersions
Admidio / admidioaffected < 5.0.9

CWE

CWE-863

References

ADP enrichment

CISA-ADP

No English description supplied.