Medium 5.4Published Jun 10, 2026

CVE-2026-46616Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers

Updated under an hour ago (Oct 27, 2026, 12:10 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for Umbraco-CMS

Exploited in the last 30 days

Umbraco is an ASP.NET CMS. Prior to versions 13.14.0 and 17.4.0, 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. This issue has been patched in versions 13.14.0 and 17.4.0.

CVSS: 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness (CWE): CWE-601
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Jun 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

umbraco Umbraco-CMS umbraco:cms (from the name)	before 13.14.0; from 17.3.0-rc, < 17.4.0	CNA record
umbraco umbraco_cms umbraco:umbraco_cms	before 13.14.0; from 14.0.0 before 17.4.0	NVD

References

References

https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-2qjj-h6wp-c7h7	x-refsource-confirm, mitigation, vendor-advisory
https://github.com/umbraco/Umbraco-CMS/pull/22561	x-refsource-misc, issue-tracking, patch
https://github.com/umbraco/Umbraco-CMS/pull/22565	x-refsource-misc, issue-tracking, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.