CVE-2026-46616

MEDIUMPre-NVD 5.45.4

5.4

Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers

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:

@using (Html.BeginUmbracoForm(
      "HandleLogout",
      new { RedirectUrl = Model.Url() }))
  {
      Log out
  }

Resources

https://github.com/umbraco/Umbraco-CMS/pull/22565 https://github.com/umbraco/Umbraco-CMS/pull/22561

CVSS v3: 5.4
EG Score: 5.4(low)
EPSS: —
KEV: Not listed

Published

May 21, 2026

Last Modified

May 21, 2026

Vendor Advisories for CVE-2026-46616(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

GHSA-2qjj-h6wp-c7h7
GitHub Security AdvisoriesMedium
Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers

Data Freshness Timeline

(refreshed 7× in last 7d / 11× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-10 01:31 UTCEG score recompute
2026-06-09 01:39 UTCEG score recompute
2026-06-08 01:46 UTCEG score recompute
2026-06-07 01:54 UTCEG score recompute
2026-06-06 02:01 UTCEG score recompute
2026-06-05 02:09 UTCEG score recompute
2026-06-04 02:17 UTCEG score recompute
2026-06-03 02:24 UTCEG score recompute
2026-06-02 02:31 UTCEG score recompute
2026-06-01 02:39 UTCEG score recompute
2026-05-24 06:11 UTCEG score recompute

Frequently asked(4)

What is CVE-2026-46616?

CVE-2026-46616 is a medium vulnerability published on May 21, 2026. Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers 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…

When was CVE-2026-46616 disclosed?

CVE-2026-46616 was first published in the National Vulnerability Database on May 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

What is the CVSS score of CVE-2026-46616?

CVE-2026-46616 has a CVSS v4.0 base score of 5.4 (CNA self-assessment; NVD's own analysis pending). The EG score is currently aggregating — additional source signals are being incorporated as they become available..

How do I remediate CVE-2026-46616?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46616, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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