Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers

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Summary

CVECVE-2026-46616
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-10 17:16:37 UTC
Updated2026-06-12 19:34:21 UTC
DescriptionUmbraco 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.

Risk And Classification

Primary CVSS: v3.1 6.1 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.001800000 probability, percentile 0.076720000 (date 2026-06-17)

Problem Types: CWE-601 | CWE-601 CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
3.1[email protected]Secondary5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
3.1CNADECLARED5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Umbraco Umbraco Cms All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Umbraco Umbraco-CMS affected < 13.14.0 Not specified
CNA Umbraco Umbraco-CMS affected >= 17.3.0-rc, < 17.4.0 Not specified

References

ReferenceSourceLinkTags
github.com/umbraco/Umbraco-CMS/pull/22565 [email protected] github.com Issue Tracking, Patch
github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-2qjj-h6wp-c7h7 [email protected] github.com Mitigation, Vendor Advisory
github.com/umbraco/Umbraco-CMS/pull/22561 [email protected] github.com Issue Tracking, Patch
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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