Medium severity · published Jun 10, 2026
CVE-2026-46616
Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers
6.1
CVSS
0.2%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UM
Umbraco-CMS · umbraco
< 13.14.0; >= 17.3.0-rc, < 17.4.0 · source: vendor
UC
Umbraco Cms · Umbraco
before 13.14.0; 14.0.0 before 17.4.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46616
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-46616
Issue Tracking
https://github.com/umbraco/Umbraco-CMS/pull/22561
Issue Tracking
https://github.com/umbraco/Umbraco-CMS/pull/22565
Mitigation
https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-2qjj-h6wp-c7h7
More from Umbraco-CMS
10.0
CVE-2025-67288
An arbitrary file upload vulnerability in Umbraco CMS v16.3.3 allows attackers to execute arbitrary code by uploading a crafted PDF file
9.8
CVE-2012-10054
Umbraco CMS versions prior to 4.7.1 are vulnerable to unauthenticated remote code execution via the codeEditorSave.asmx SOAP endpoint, which exposes a SaveDLRScript operation that…
9.8
CVE-2023-37267
Umbraco is a ASP.NET CMS
9.8
CVE-2014-10074
Umbraco before 7.2.0 has a remote PHP code execution vulnerability because Umbraco.Web.UI/config/umbracoSettings.Release.config does not block the upload of .php files
9.8
CVE-2012-1301
The FeedProxy.aspx script in Umbraco 4.7.0 allows remote attackers to proxy requests on their behalf via the "url" parameter