In Telerik UI for WinForms, versions prior to 2026.4.1111, an untrusted URL redirection vulnerability exists that allows an attacker to launch arbitrary operating system protocol handlers with attacker-controlled arguments via crafted documents and hyperlinks with a non-allowlisted URI scheme that the user opens.
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Fixes

Solution

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Workaround

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History

Thu, 12 Nov 2026 17:30:00 +0000

Type Values Removed Values Added
Description In Telerik UI for WinForms, versions prior to 2026.4.1111, an untrusted URL redirection vulnerability exists that allows an attacker to launch arbitrary operating system protocol handlers with attacker-controlled arguments via crafted documents and hyperlinks with a non-allowlisted URI scheme that the user opens.
Title URL Redirection to Untrusted Site in Progress Telerik UI for WinForms
Weaknesses CWE-601
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: ProgressSoftware

Published:

Updated: 2026-11-12T17:21:46.348Z

Reserved: 2026-11-09T10:41:43.933Z

Link: CVE-2026-124700

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-12T18:17:22.537

Modified: 2026-11-12T18:17:22.537

Link: CVE-2026-124700

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses