Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers
Published Jun 10, 2026
6.1
MEDIUMCVSS 3.1
EPSS 0.30%
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.
Affected products
-
- Version < 13.14.0StatusaffectedConstraints-
- Version >= 17.3.0-rc, < 17.4.0StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Umbraco | Umbraco-CMS | n/a |
|
- < 13.14.0
- ≥ 14.0.0 · < 17.4.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
1 other source (GHSA) ▾
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Jun 10, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Jun–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.30% (0.00297) | 20.18th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.18% (0.00180) | 7.66th | v5 (v2026.06.15) |
| Jun 11, 2026 | 0.03% (0.00026) | 7.97th | v4 (v2025.03.14) |
References (5)
- https://github.com/advisories/GHSA-2qjj-h6wp-c7h7 Advisory
- https://github.com/umbraco/Umbraco-CMS/pull/22561 x_refsource_MISCIssue TrackingPatch
- https://github.com/umbraco/Umbraco-CMS/pull/22565 x_refsource_MISCIssue TrackingPatch
- https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-2qjj-h6wp-c7h7 x_refsource_CONFIRMMitigationVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-46616
| Link | Providers | Tags |
|---|---|---|
| https://github.com/advisories/GHSA-2qjj-h6wp-c7h7 | Advisory | |
| https://github.com/umbraco/Umbraco-CMS/pull/22561 | x_refsource_MISCIssue TrackingPatch | |
| https://github.com/umbraco/Umbraco-CMS/pull/22565 | x_refsource_MISCIssue TrackingPatch | |
| https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-2qjj-h6wp-c7h7 | x_refsource_CONFIRMMitigationVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2026-46616 |
Change history (0)
No recorded changes yet.