{"affected":[{"defaultStatus":"unaffected","product":"Telerik UI for WinForms","source":"CNA: ProgressSoftware","vendor":"Progress Software","versions":[{"lessThan":"2026.4.1111","status":"affected","version":"2026.3.1007","versionType":"custom"}]}],"cveId":"CVE-2026-124700","cwes":["CWE-601"],"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.","epss":{"date":"2026-11-13","percentile":0.01413,"score":0.00112},"exploits":[],"kev":null,"metrics":[{"score":7.8,"severity":"high","source":"CNA: ProgressSoftware","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},{"score":7.8,"severity":"high","source":"NVD: security@progress.com","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1794632274844,"publishedAt":1794504106348,"references":[{"source":"CNA: ProgressSoftware","tags":["vendor-advisory"],"url":"https://www.telerik.com/products/winforms/documentation/knowledge-base/kb-security-untrusted-url-redirection-cve-2026-124700"},{"source":"security@progress.com","tags":[],"url":"https://www.telerik.com/products/winforms/documentation/knowledge-base/kb-security-untrusted-url-redirection-cve-2026-124700"}],"remediation":[],"revision":"574bbbd63e6d60c9268b6665bfd4a0c272a7e8a9e15f993aa52b8a2d86d5c69c","sources":[{"modifiedAt":1794632274844,"name":"CNA: ProgressSoftware","retrievedAt":1794632939839,"url":"https://www.cve.org/CVERecord?id=CVE-2026-124700"},{"modifiedAt":1794510155830,"name":"NVD","retrievedAt":1794529526157,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-124700"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794632955179,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-124700"}],"ssvc":{"assessedAt":1794528000000,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"URL Redirection to Untrusted Site in Progress Telerik UI for WinForms","updatedAt":1794632955179}