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.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/umbraco/Umbraco-CMS/pull/22561 Issue Tracking, Patch
- https://github.com/umbraco/Umbraco-CMS/pull/22565 Issue Tracking, Patch
- https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-2qjj-h6wp-c7h7 Mitigation, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.1 · umbracoNVD modified 2026-10-26 11:10
Affected (CPE criteria) 1
cpe:2.3:a:umbraco:umbraco_cms:*:*:*:*:*:*:*:*
References 3
- https://github.com/umbraco/Umbraco-CMS/pull/22561 Issue Tracking, Patch
- https://github.com/umbraco/Umbraco-CMS/pull/22565 Issue Tracking, Patch
- https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-2qjj-h6wp-c7h7 Mitigation, Vendor Advisory