CVE-2026-46616 json
Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers
published 2026-05-21 5 mo ago modified 2026-10-26 14 d ago also EUVD-2026-36069 , GHSA-2qjj-h6wp-c7h7
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 7%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- nuget Umbraco.Cms 13.14.0, 17.4.0
- umbraco umbraco_cms 13.14.0, 17.4.0
- github.com/umbraco/Umbraco-CMS#22561 pull request
- github.com/umbraco/Umbraco-CMS#22565 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N |
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| nuget | Umbraco.Cms | <13.14.0 >=17.3.0-rc, <17.4.0 |
13.14.0 17.4.0 |
Affected products
- umbraco Umbraco-CMS
Classification
- Weakness
-
- CWE-601 URL Redirection to Untrusted Site
References
-
github.com
/umbraco/Umbraco-CMS/pull/22561
web, issue-tracking, patch
-
github.com
/umbraco/Umbraco-CMS/pull/22565
web, issue-tracking, patch
-
github.com
/umbraco/Umbraco-CMS/security/advisories/GHSA-2qjj-h6wp-c7h7
web, mitigation, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-46616
advisory
-
github.com
/umbraco/Umbraco-CMS
package
Sources
- CVE List CVE-2026-46616
- GitHub Advisory GHSA-2qjj-h6wp-c7h7
- NVD CVE-2026-46616
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.