Azure-APIM-Cross-Tenant-Signup-Bypass

Bypass de registro entre inquilinos de Azure APIM Estado 01.12.2025: Esta vulnerabilidad sigue activa y explotable. Microsoft no ha corregido este problema y lo considera «por diseño». Aviso de seguridad GHSA-vcwf-73jp-r7mv CVE-2025-66390 Resumen Una vulnerabilidad de seguridad en el portal para...

EUVD-2025-210492

In Microsoft Azure API Management through 2025-10-17, when self-service signup username/password Basic Authentication is enabled in Tenant A, an attacker can reuse the registration flow by changing the hostname or tenant identifier to Tenant B, even when Tenant B has signup disabled at the UI...

CVE-2025-66390

In Microsoft Azure API Management through 2025-10-17, when self-service signup username/password Basic Authentication is enabled in Tenant A, an attacker can reuse the registration flow by changing the hostname or tenant identifier to Tenant B, even when Tenant B has signup disabled at the UI...

PT-2026-61937

Name of the Vulnerable Software and Affected Versions Microsoft Azure API Management versions prior to 2025-10-17 Description When self-service signup using username and password Basic Authentication is enabled in one tenant, an attacker can reuse the registration flow to target another tenant by...

CVE-2025-66390

CVE-2025-66390 affects Microsoft Azure API Management Developer Portal: when Basic Authentication signup is enabled in Tenant A, an attacker can register on Tenant B by altering the Host header, bypassing a UI-level signup disable because the underlying /signup API remains accessible and validate...

CVE-2025-66390

In Microsoft Azure API Management through 2025-10-17, when self-service signup username/password Basic Authentication is enabled in Tenant A, an attacker can reuse the registration flow by changing the hostname or tenant identifier to Tenant B, even when Tenant B has signup disabled at the UI...

CVE-2025-66390

In Microsoft Azure API Management through 2025-10-17, when self-service signup username/password Basic Authentication is enabled in Tenant A, an attacker can reuse the registration flow by changing the hostname or tenant identifier to Tenant B, even when Tenant B has signup disabled at the UI...

CVE-2025-66390

In Microsoft Azure API Management through 2025-10-17, when self-service signup username/password Basic Authentication is enabled in Tenant A, an attacker can reuse the registration flow by changing the hostname or tenant identifier to Tenant B, even when Tenant B has signup disabled at the UI...