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...

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...

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 ...

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...

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...

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...

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,...

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,...

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...

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...

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...

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-2026-36106

Name of the Vulnerable Software and Affected Versions Admidio versions prior to 5.0.9 Description The SAML Identity Provider implementation fails to properly handle the return value of the validateSignature function. This function returns error strings upon failure instead of throwing exceptions,...

PT-2026-37145

Name of the Vulnerable Software and Affected Versions Admidio versions prior to 5.0.9 Description An unauthenticated attacker can execute arbitrary JavaScript in a user's browser via reflected Cross-Site Scripting XSS. The issue occurs in the 'system/msg window.php' endpoint, which accepts messag...