CVE-2026-124700
URL Redirection to Untrusted Site in Progress Telerik UI for WinForms
- High 7.8
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.
Key facts
- Published
- 12 Nov 2026
- Last changed
- 14 Nov 2026
- Assigned by
- ProgressSoftware
- EPSS
- 0.112% likely to be exploited in the next 30 days, higher than 1.426% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: none; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 7.8CVSS 3.1, Highfrom the CNA (ProgressSoftware)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
CAPEC-194 Fake the Source of Data (CNA impact statement)
No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Progress Software | Telerik UI for WinForms |
|
Timeline
- 12 Nov 2026 Published