CVE-2026-69857 Azure Cosmos DB Spoofing Vulnerability

High 8.5 Published 3 Sep 2026 Updated 26 Oct 2026

An authorized attacker can bypass authorization controls in Azure Cosmos DB to perform spoofing attacks over the network.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-69857?

CVE-2026-69857 is a high-severity authentication bypass vulnerability in Microsoft Azure Cosmos DB, published on 3 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Authorization bypass through user-controlled key in Azure Cosmos DB allows an authorized attacker to perform spoofing over a network.

Weakness: CWE-639

Which versions are affected by CVE-2026-69857?

It affects 1 product.

Products include Microsoft Azure Cosmos Db.

How do I fix CVE-2026-69857?

No fix has been published for CVE-2026-69857 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-69857 being exploited?

There is no known exploitation of CVE-2026-69857 in the wild and no public exploit code.

Sources

Also known as GHSA-7h72-qvqq-9276.