# CVE-2026-6023: In Progress® Telerik® UI for AJAX versions 2024.4.1114 through 2026.1.421, the RadFilter control is vulnerable to…

Source: https://junglewise.ai/threats/cve-2026-6023-in-progress-telerik-ui-for-ajax-versions-2024-4-1114-through-2026  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-22  
License: CC BY 4.0 with a link back

CVE-2026-6023 · Severity: high · CVSS 8.1 · Published 2026-04-22

In Progress® Telerik® UI for AJAX versions 2024.4.1114 through 2026.1.421, the RadFilter control is vulnerable to insecure deserialization when restoring filter state if the state is exposed to the client. If an attacker tampers with this state, a server-side remote code execution is possible.

Technologies: [Progress Telerik Ui For Asp.Net Ajax](https://junglewise.ai/threats/technologies/telerik-ui-for-asp-net-ajax). Vendors: [Progress](https://junglewise.ai/threats/vendors/progress).

## Quick answers

**Is CVE-2026-6023 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-6023 being exploited in the wild.

**How severe is CVE-2026-6023?** High severity, with a CVSS score of 8.1, published 22 April 2026.

**Which products and versions are affected?** Progress Telerik Ui For Asp.Net Ajax. The advisory does not name versions.

**Is there a fix for CVE-2026-6023?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-6023?** Check whether you run Progress Telerik Ui For Asp.Net Ajax. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Progress Telerik Ui For Asp.Net Ajax

## Related threats

- [In Progress® Telerik® UI for AJAX prior to 2026.1.421, RadAsyncUpload contains an uncontrolled resource consumption…](https://junglewise.ai/threats/cve-2026-6022-in-progress-telerik-ui-for-ajax-prior-to-2026-1-421-radasyncupload)
- [Progress Telerik UI for ASP.NET AJAX Deserialization of Untrusted Data Vulnerability](https://junglewise.ai/threats/cve-2019-18935-progress-telerik-ui-for-asp-net-ajax-deserialization-of-untrusted)