CVE-2026-46616 is a medium-severity open redirect vulnerability in Umbraco.Cms (nuget), affecting versions < 13.14.0. It is fixed in 13.14.0, 17.4.0.
Impact Some of the Surface Controllers in the CMS provide to support member related operations fail to validate redirect URLs, making Razor templates that derive 'RedirectUrl' from user-controlled query parameters vulnerable to malicious redirect attacks. Patches The issue is resolved in versions 17.4.0 and 13.14.0. Workarounds If users cannot upgrade immediately, they can mitigate the issue in their own site by ensuring every Razor form that posts to UmbLoginStatusController, UmbProfileController or UmbRegisterController passes a concrete, trusted RedirectUrl into Html.BeginUmbracoForm's route values. For example: Resources https://github.com/umbraco/Umbraco-CMS/pull/22565 https://github.com/umbraco/Umbraco-CMS/pull/22561
Untrusted input controls a URL used for redirection, which can forward users to attacker-controlled sites. Typical impact: phishing and credential harvesting via a trusted domain.
CVE-2026-46616 has a CVSS score of 5.4 (Medium). The vector is network-reachable, no privileges required, and user interaction required. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment.
A fixed version is available (13.14.0, 17.4.0). Upgrading removes the vulnerable code path.
nuget
Umbraco.Cms (< 13.14.0)Umbraco.Cms (>= 17.3.0-rc, < 17.4.0)Umbraco.Cms → 13.14.0 (nuget)Umbraco.Cms → 17.4.0 (nuget)Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter instead of chasing every advisory.
Kodem's runtime-powered SCA identifies whether CVE-2026-46616 is reachable in your applications. Explore open-source security for your team.
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Upgrade the following packages to resolve this vulnerability:
Umbraco.Cms to 13.14.0 or laterUmbraco.Cms to 17.4.0 or laterKodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
CVE-2026-46616 is a medium-severity open redirect vulnerability in Umbraco.Cms (nuget), affecting versions < 13.14.0. It is fixed in 13.14.0, 17.4.0. Untrusted input controls a URL used for redirection, which can forward users to attacker-controlled sites.
CVE-2026-46616 has a CVSS score of 5.4 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
Umbraco.Cms (nuget) versions < 13.14.0 is affected.
Yes. CVE-2026-46616 is fixed in 13.14.0, 17.4.0. Upgrade to this version or later.
Whether CVE-2026-46616 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
Umbraco.Cms to 13.14.0 or laterUmbraco.Cms to 17.4.0 or later