CVE-2023-21564 Azure DevOps Server Cross-Site Scripting Vulnerability

High 7.1 Published 14 Feb 2023 Updated 19 Aug 2026

Attackers can inject malicious scripts into Azure DevOps Server, potentially executing code or hijacking user accounts.

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-2023-21564?

CVE-2023-21564 is a high-severity cross-site scripting vulnerability in Microsoft Azure DevOps Server 2022, published on 14 Feb 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Azure DevOps Server Cross-Site Scripting Vulnerability

Weakness: CWE-79

Which versions are affected by CVE-2023-21564?

It affects 1 product.

Products include Microsoft Azure Devops Server.

How do I fix CVE-2023-21564?

No fix has been published for CVE-2023-21564 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2023-21564 being exploited?

There is no known exploitation of CVE-2023-21564 in the wild and no public exploit code.

Sources

Also known as GHSA-fvm6-3mw8-9cq2.