CVE-2026-6022 Uncontrolled Resource Consumption Vulnerability in Telerik UI for ASP.NET AJAX

High 7.5 Published 22 Apr 2026 Updated 22 Apr 2026

Attackers can exhaust disk space by uploading files exceeding size limits due to missing cumulative size checks in RadAsyncUpload.

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

What is CVE-2026-6022?

CVE-2026-6022 is a high-severity denial of service vulnerability in Progress Software Telerik UI for ASP.NET AJAX, published on 22 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Progress® Telerik® UI for AJAX prior to 2026.1.421, RadAsyncUpload contains an uncontrolled resource consumption vulnerability that allows file uploads to exceed the configured maximum size due to missing cumulative size enforcement during chunk reassembly, leading to disk space exhaustion.

Weakness: CWE-400

Which versions are affected by CVE-2026-6022?

It affects 1 product.

Products include Progress Telerik Ui for Asp.net Ajax.

How do I fix CVE-2026-6022?

No fix has been published for CVE-2026-6022 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-6022 being exploited?

There is no known exploitation of CVE-2026-6022 in the wild and no public exploit code.

Sources

Also known as GHSA-vf2r-6g4x-jc4h.