---
id: 5786
title: "nOAuth Abuse Alert: Full Account Takeover of Entra Cross-Tenant SaaS Applications"
source_domain: semperis.com
source_url: "https://www.semperis.com/blog/noauth-abuse-alert-full-account-takeover/"
published_at: "2025-06-25T13:15:00Z"
tags: ["account-takeover", "entra-id", "vulnerability", "saas-security", "noauth", "cross-tenant"]
phying_url: "https://phying.com/item/5786"
lang: en
---

# nOAuth Abuse Alert: Full Account Takeover of Entra Cross-Tenant SaaS Applications

## Summary

Semperis found 9 of 104 tested SaaS apps vulnerable to nOAuth abuse: with an Entra tenant and a victim's email, an attacker can take over accounts. The flaw is severe and hard to defend against.

## Intelligence Metadata

- **Sources:** semperis.com
- **Published:** 2025-06-25T13:15:00Z
- **Original:** https://www.semperis.com/blog/noauth-abuse-alert-full-account-takeover/
- **Phying News:** https://phying.com/item/5786