Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers
Exact source revision recorded 23 Oct 2026 16:01:25 UTC. It does not establish the source's current position. Latest evidence.
osv · GHSA-2qjj-h6wp-c7h7
Published### 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: ```cshtml @using (Html.BeginUmbracoForm<UmbLoginStatusController>( "HandleLogout", new { RedirectUrl = Model.Url() })) { <button type="submit">Log out</button> } ``` ### Resources https://github.com/umbraco/Umbraco-CMS/pull/22565 https://github.com/umbraco/Umbraco-CMS/pull/22561
- Source published
- 21 May 2026 19:58:06 UTC
- Source modified
- 10 Jun 2026 18:46:57 UTC
- Observed here
- 23 Oct 2026 16:01:25 UTC
- Source terms
- GitHub Advisory Database · CC-BY-4.0
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.
CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Publisher rating · MODERATE