Open Redirect Affecting umbraco.cms.web.website package, versions [,13.14.0)[14.0.0-rc1,17.4.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published22 May 2026
- disclosed21 May 2026
- creditParkHyunWoo
Introduced: 21 May 2026
NewCVE-2026-46616 (opens in a new tab)How to fix?
Upgrade Umbraco.Cms.Web.Website to version 13.14.0, 17.4.0 or higher.
Overview
Affected versions of this package are vulnerable to Open Redirect via the RedirectUrl parameter in UmbLoginStatusController, UmbRegisterController, UmbProfileController controllers. An attacker can redirect users to arbitrary external sites by supplying a crafted URL in user-controlled query parameters.
Workaround
This vulnerability can be mitigated by ensuring every Razor form that posts to UmbLoginStatusController, UmbProfileController, or UmbRegisterController passes a concrete, trusted RedirectUrl into Html.BeginUmbracoForm's route values.