CVE-2026-41669 Admidio: SAML Signature Validation Result Ignored — Forged AuthnRequests and LogoutRequests Processed

Admidio is an open-source user management solution. Prior to version 5.0.9, 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...

CVE-2026-41663 Admidio: CSRF on Admin Preferences Triggers Unauthorized Backup, .htaccess Write, and Email Send

Admidio is an open-source user management solution. Prior to version 5.0.9, several administrative operations in Admidio's preferences module database backup, test email, htaccess generation fire via GET requests with no CSRF token validation. Because SameSite=Lax cookies travel with top-level GE...

EUVD-2026-28278

Admidio is an open-source user management solution. Prior to version 5.0.9, several administrative operations in Admidio's preferences module database backup, test email, htaccess generation fire via GET requests with no CSRF token validation. Because SameSite=Lax cookies travel with top-level GE...

CVE-2026-41663

Admidio is an open-source user management solution. Prior to version 5.0.9, several administrative operations in Admidio's preferences module database backup, test email, htaccess generation fire via GET requests with no CSRF token validation. Because SameSite=Lax cookies travel with top-level GE...

CVE-2026-41663 Admidio: CSRF on Admin Preferences Triggers Unauthorized Backup, .htaccess Write, and Email Send

Admidio is an open-source user management solution. Prior to version 5.0.9, several administrative operations in Admidio's preferences module database backup, test email, htaccess generation fire via GET requests with no CSRF token validation. Because SameSite=Lax cookies travel with top-level GE...

CVE-2026-41663 Admidio: CSRF on Admin Preferences Triggers Unauthorized Backup, .htaccess Write, and Email Send

Admidio is an open-source user management solution. Prior to version 5.0.9, several administrative operations in Admidio's preferences module database backup, test email, htaccess generation fire via GET requests with no CSRF token validation. Because SameSite=Lax cookies travel with top-level GE...

CVE-2026-41663

Admidio has a CSRF flaw (CVE-2026-41663) affecting versions prior to 5.0.9. The vulnerability lies in the preferences module where backup, test_email, and htaccess operations are executed via GET requests without CSRF validation, allowing exploitation via SameSite=Lax cookies to trigger actions o...

EUVD-2026-28276

Admidio is an open-source user management solution. Prior to version 5.0.9, Role::stopMembership does not verify whether removing a user from the administrator role leaves zero administrators. The deprecated Membership::stopMembership contains this safety check, but the current code path bypasses...

CVE-2026-41662 Admidio: Missing Minimum Administrator Check in Role Membership Removal

Admidio is an open-source user management solution. Prior to version 5.0.9, Role::stopMembership does not verify whether removing a user from the administrator role leaves zero administrators. The deprecated Membership::stopMembership contains this safety check, but the current code path bypasses...

CVE-2026-41662

Admidio suffers a Missing Minimum Administrator Check in Role::stopMembership(), before 5.0.9. The code path removes a member from the administrator role without verifying that at least one admin remains; with two admins, sequential removals can leave zero admins, locking out administrative acces...

CVE-2026-41662 Admidio: Missing Minimum Administrator Check in Role Membership Removal

Admidio is an open-source user management solution. Prior to version 5.0.9, Role::stopMembership does not verify whether removing a user from the administrator role leaves zero administrators. The deprecated Membership::stopMembership contains this safety check, but the current code path bypasses...

CVE-2026-41662 Admidio: Missing Minimum Administrator Check in Role Membership Removal

Admidio is an open-source user management solution. Prior to version 5.0.9, Role::stopMembership does not verify whether removing a user from the administrator role leaves zero administrators. The deprecated Membership::stopMembership contains this safety check, but the current code path bypasses...

CVE-2026-41661 Admidio: Reflected XSS in msg_window.php via Square Bracket to HTML Tag Conversion

Admidio is an open-source user management solution. Prior to version 5.0.9, 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...

CVE-2026-41661 Admidio: Reflected XSS in msg_window.php via Square Bracket to HTML Tag Conversion

Admidio is an open-source user management solution. Prior to version 5.0.9, 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...

CVE-2026-41661 Admidio: Reflected XSS in msg_window.php via Square Bracket to HTML Tag Conversion

Admidio is an open-source user management solution. Prior to version 5.0.9, 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...

CVE-2026-41661

Admidio is an open-source user management solution. Prior to version 5.0.9, 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...

CVE-2026-41661

CVE-2026-41661 describes a reflected XSS in Admidio prior to 5.0.9. The attack uses the endpoint system/msg_window.php; input in message_var1 is passed through htmlspecialchars(), which leaves square brackets intact. Language::prepareTextPlaceholders() then converts [ and ] to , allowing the inje...

CVE-2026-41660 Admidio: Inverted 2FA Reset Authorization Check Lets Group Leaders Strip Admin TOTP

Admidio is an open-source user management solution. Prior to version 5.0.9, 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...

EUVD-2026-28272

Admidio is an open-source user management solution. Prior to version 5.0.9, 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...

CVE-2026-41660

Admidio is an open-source user management solution. Prior to version 5.0.9, 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...