GHSA-25CW-98HG-G3CG Admidio Ignores SAML Signature Validation Result, Processes Forged AuthnRequests and LogoutRequests

Summary The Admidio SAML Identity Provider implementation discards the return value of its validateSignature method at both call sites handleSSORequest line 418 and handleSLORequest line 613. The method returns error strings on failure rather than throwing exceptions, but the developer believed i...

Cross-site Request Forgery (CSRF)

Overview admidio/admidio is a free open source user management system for websites of organizations and groups. Affected versions of this package are vulnerable to Cross-site Request Forgery CSRF via the preferences.php process. An attacker can trigger unauthorized server-side actions, such as...

Improper Check for Unusual or Exceptional Conditions

Overview admidio/admidio is a free open source user management system for websites of organizations and groups. Affected versions of this package are vulnerable to Improper Check for Unusual or Exceptional Conditions in the stopMembership function. An attacker can cause a denial of administrative...

GHSA-GQ27-FC8W-VCMP Admidio vulnerable to reflected XSS in msg_window.php via Square Bracket to HTML Tag Conversion

Summary An unauthenticated attacker can execute arbitrary JavaScript in any Admidio user's browser through a reflected XSS in system/msgwindow.php. The endpoint passes user input through htmlspecialchars, which does not encode square brackets. A subsequent call to Language::prepareTextPlaceholder...

Admidio vulnerable to reflected XSS in msg_window.php via Square Bracket to HTML Tag Conversion

Summary An unauthenticated attacker can execute arbitrary JavaScript in any Admidio user's browser through a reflected XSS in system/msgwindow.php. The endpoint passes user input through htmlspecialchars, which does not encode square brackets. A subsequent call to Language::prepareTextPlaceholder...

Cross-site Scripting (XSS)

Overview admidio/admidio is a free open source user management system for websites of organizations and groups. Affected versions of this package are vulnerable to Cross-site Scripting XSS via the msgwindow.php process. An attacker can execute arbitrary JavaScript in a user's browser by crafting ...

Admidio has Inverted 2FA Reset Authorization Check that Lets Group Leaders Strip Admin TOTP

Summary A logic error in Admidio's two-factor authentication reset inverts the authorization check. Non-admin users cannot remove their own TOTP configuration, but they can remove other users' TOTP, including administrators. A group leader with profile edit rights on an admin account can strip th...

GHSA-RH3W-4CCX-PRF9 Admidio has Inverted 2FA Reset Authorization Check that Lets Group Leaders Strip Admin TOTP

Summary A logic error in Admidio's two-factor authentication reset inverts the authorization check. Non-admin users cannot remove their own TOTP configuration, but they can remove other users' TOTP, including administrators. A group leader with profile edit rights on an admin account can strip th...

GHSA-68PR-7PRH-MPV4 Admidio Leaks Hidden Profile Field Values via Blind Search Oracle in Member Assignment

Summary The member assignment DataTables endpoint membersassignmentdata.php includes hidden profile fields BIRTHDAY, STREET, CITY, POSTCODE, COUNTRY in its SQL search condition regardless of field visibility settings. While the JSON output correctly suppresses hidden columns via isVisible checks,...

Admidio Leaks Hidden Profile Field Values via Blind Search Oracle in Member Assignment

Summary The member assignment DataTables endpoint membersassignmentdata.php includes hidden profile fields BIRTHDAY, STREET, CITY, POSTCODE, COUNTRY in its SQL search condition regardless of field visibility settings. While the JSON output correctly suppresses hidden columns via isVisible checks,...

Information Exposure

Overview admidio/admidio is a free open source user management system for websites of organizations and groups. Affected versions of this package are vulnerable to Information Exposure via the membersassignmentdata.php process. An attacker can infer hidden personally identifiable information such...

Missing Authorization

Overview admidio/admidio is a free open source user management system for websites of organizations and groups. Affected versions of this package are vulnerable to Missing Authorization in the itemdelete, itemretire, itemreinstate, itempictureupload, itempicturesave, and itempicturedelete endpoin...

GHSA-XQV4-XM7H-52CV Admidio's Missing Authorization on Inventory Module Destructive Endpoints Allows Any Authenticated User to Delete Items

Summary The Admidio inventory module enforces authorization for destructive operations delete, retire, reinstate only in the UI layer by conditionally rendering buttons. The backend POST handlers at modules/inventory.php for itemdelete, itemretire, itemreinstate, itempictureupload, itempicturesav...

GHSA-G8P8-94F2-28GR Admidio Exposes Cross-Organization Member Data via Permission Check Mismatch in contacts_data.php

Summary The contactsdata.php endpoint uses a weaker permission check isAdministratorUsers, requiring only roledituser=true than the frontend UI contacts.php which correctly requires the stronger isAdministrator requiring roladministrator=true and the contactsshowall system setting. A user manager...

Incorrect Authorization

Overview admidio/admidio is a free open source user management system for websites of organizations and groups. Affected versions of this package are vulnerable to Incorrect Authorization via the contactsdata.php process. An attacker can access sensitive user data from all organizations by direct...

Directory Traversal

Overview admidio/admidio is a free open source user management system for websites of organizations and groups. Affected versions of this package are vulnerable to Directory Traversal via the name parameter in the add process. An attacker can access arbitrary files on the server by tricking a...

GHSA-M3VP-3JJM-GPMX Admidio has Path Traversal in ECard Preview that Allows Reading Arbitrary Server Files Including Database Credentials

Summary The ecardpreview.php endpoint does not validate that the ecardtemplate POST parameter is a safe filename before passing it to ECard::getEcardTemplate. An authenticated user can supply a path traversal payload e.g., ../config.php to read arbitrary files accessible to the web server process...

PT-2026-37142

Name of the Vulnerable Software and Affected Versions Admidio versions prior to 5.0.9 Description The inventory module fails to properly enforce authorization for destructive operations on the backend, relying instead on the UI layer to hide buttons from non-administrative users. While the system...

PT-2026-37146

Name of the Vulnerable Software and Affected Versions Admidio versions prior to 5.0.9 Description An issue exists where the Role::stopMembership function fails to verify if removing a user from the administrator role leaves the system with zero administrators. While the deprecated...

PT-2026-37140

Name of the Vulnerable Software and Affected Versions Admidio versions prior to 5.0.9 Description An issue exists in the 'add' mode of the 'modules/documents-files.php' endpoint where the name parameter is validated only as a string, allowing path traversal characters such as ../ to pass...