CVE-2026-124702: Progress Telerik UI for WPF untrusted URL redirection

CVE-2026-124702 · Severity: high · CVSS 7.8 · Published 2026-11-12

Telerik UI for WPF is a graphical component library used to build Windows desktop applications. A vulnerability allows attackers to craft malicious documents with hyperlinks that redirect users to unintended websites or launch arbitrary system protocol handlers, potentially leading to credential theft, malware installation, or other attacks when a user opens the document.

Technologies: Progress Telerik UI for WPF. Vendors: Progress.

Quick answers

Is CVE-2026-124702 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-124702 being exploited in the wild.
How severe is CVE-2026-124702?
High severity, with a CVSS score of 7.8, published 12 November 2026.
Which products and versions are affected?
Progress Telerik UI for WPF prior to 2026.4.1110.
Is there a fix for CVE-2026-124702?
Yes: fixed in 2026.4.1110 and later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-124702 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-124702?
Check whether you run Progress Telerik UI for WPF at an affected version. 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.

How to fix

  • Fixed in: 2026.4.1110 and later

Technical details

An untrusted URL redirection vulnerability (CWE-601) in Telerik UI for WPF versions prior to 2026.4.1110 allows an attacker to craft documents and hyperlinks with non-allowlisted URI schemes that, when opened by a user, redirect to attacker-controlled resources or launch arbitrary OS protocol handlers with attacker-controlled arguments. The attack requires user interaction to open a crafted document.

Affected products

  • Progress Telerik UI for WPF prior to 2026.4.1110

Timeline

  • 2026-11-12: disclosed

References

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