Umbraco CMS 14
Umbraco CMS 14
The Umbraco CMS 14 reached end of service life on May 30, 2025 — Umbraco CMS no longer ships security patches or fixes for it. Our third-party support keeps it safe to run: 24/7 engineers manage issues, remediate vulnerabilities, and help you maintain compliance.
24/7 engineers own your Umbraco CMS 14 incidents end to end.
Mitigation and patch-around guidance when the vendor no longer ships fixes.
Controls evidence and documentation that keep auditors satisfied.
Specifications
- product
- umbraco
- release
- 14
- product Label
- Umbraco CMS
- release Label
- 14
- codename
- lts
- latest Version
- 14.3.4
- release Date
- 2024-05-30
- maintained
- source Url
- https://endoflife.date/umbraco
Lifecycle Dates
- End of Service Life
- May 30, 2025
- Last OEM Support
- Mar 2, 2025
OEM vs. 3rd Party Support
See how third-party support compares to the vendor contract for Umbraco CMS 14 — monitoring, break/fix, vulnerability work, operations and compliance, before and after EOSL.
| Feature | OEM Support | 3rd Party Support |
|---|---|---|
| Post-EOSL Support | ||
| Break/Fix Support | Until EOSL | |
| 24/7 Monitoring | ||
| Vulnerability Scanning & Remediation | ||
| Managed Operations | ||
| Procedure & Configuration Review | ||
| Compliance & Audit Documentation | Limited | |
| Discounted Migration to Other Platforms |
Why Choose 3rd Party Support for Umbraco CMS 14?
Vulnerability Remediation
Scanning, mitigation and patch-around guidance for Umbraco CMS 14 when the vendor no longer ships fixes.
Compliance Maintenance
Procedure review, controls evidence and the documentation auditors ask for — maintained continuously, not scrambled at audit time.
24/7 Expert Support
Engineers who know this release monitor, manage and fix issues around the clock — break/fix to managed operations.
Umbraco CMS 14 Support: Frequently Asked Questions
Is the Umbraco CMS 14 still supported?
Umbraco CMS ended support for the Umbraco CMS 14 on May 30, 2025 — no more patches or fixes from the vendor. Third-party support keeps it covered: our engineers manage issues, remediate vulnerabilities, and help you maintain compliance for as long as you run it.
When is the Umbraco CMS 14 end of service life (EOSL) date?
Umbraco CMS lists the end of service life for the Umbraco CMS 14 as May 30, 2025.
Can I keep using the Umbraco CMS 14 after its EOSL date?
Yes. EOSL means Umbraco CMS stops issuing patches and support — the software itself keeps running. Third-party support covers it from there: issue management, security vulnerability remediation, and the compliance documentation auditors ask for, for as long as you choose to run it.
How much does third-party support for the Umbraco CMS 14 cost?
Typically 40-70% below the OEM maintenance renewal price. Exact pricing depends on quantity, service level and location — request a quote and we respond within 24 hours.
Known Vulnerabilities Affecting Umbraco CMS 14
13 published CVEs affect the Umbraco CMS 14, including 1 rated critical or high severity. Umbraco CMS no longer ships security patches for this release — our engineers provide mitigation guidance, workarounds and hardening support.
| CVE | Severity | CVSS | Published | Summary |
|---|---|---|---|---|
| CVE-2025-32017 | HIGH | 8.8 | Apr 8, 2025 | Umbraco is a free and open source .NET content management system. Authenticated users to the Umbraco backoffice are able to craft management API request that exploit a path traversal vulnerability to upload files into a incorrect location. The issue affects Umbraco 14+ and is patched in 14.3.4 and 15.3.1. |
| CVE-2024-55488 | MEDIUM | 6.5 | Jan 22, 2025 | A stored cross-site scripting (XSS) vulnerability in Umbraco CMS v14.3.1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload. NOTE: This has been disputed by the vendor since this potential attack is only possible via authenticated users who have been manually allowed access to the CMS. There was a deliberate decision made not to apply HTML sanitization at the product level. |
| CVE-2025-48953 | MEDIUM | 5.5 | Jun 3, 2025 | Umbraco is an ASP.NET content management system (CMS). Starting in version 14.0.0 and prior to versions 15.4.2 and 16.0.0, it's possible to upload a file that doesn't adhere with the configured allowable file extensions via a manipulated API request. The issue is patched in versions 15.4.2 and 16.0.0. No known workarounds are available. |
| CVE-2026-46616 | MEDIUM | 5.4 | Jun 10, 2026 | 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. |
| CVE-2026-31832 | MEDIUM | 5.4 | Mar 10, 2026 | Umbraco is an ASP.NET CMS. From 14.0.0 to before 16.5.1 and 17.2.2, A broken object-level authorization vulnerability exists in a backoffice API endpoint that allows authenticated users to assign domain-related data to content nodes without proper authorization checks. The issue is caused by insufficient authorization enforcement on the affected API endpoint, whereby via an API call, domains can be set on content nodes that the editor does not have permission to access (either via user group pri |
| CVE-2024-43377 | MEDIUM | 5.4 | Aug 20, 2024 | Umbraco CMS is an ASP.NET CMS. An authenticated user can access a few unintended endpoints. This issue is fixed in 14.1.2. |
| CVE-2025-24011 | MEDIUM | 5.3 | Jan 21, 2025 | Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, it's possible to determine whether an account exists based on an analysis of response codes and timing of Umbraco management API responses. Versions 14.3.2 and 15.1.2 contain a patch. No known workarounds are available. |
| CVE-2026-46609 | MEDIUM | 4.6 | Jun 10, 2026 | Umbraco is an ASP.NET CMS. From version 14.0.0 to before version 17.4.0, authenticated users are able to inject HTML into an input field, which is rendered in the confirmation dialog without proper output encoding. This issue has been patched in version 17.4.0. |
| CVE-2025-24012 | MEDIUM | 4.6 | Jan 21, 2025 | Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, authenticated users are able to exploit a cross-site scripting vulnerability when viewing certain localized backoffice components. Versions 14.3.2 and 15.1.2 contain a patch. |
| CVE-2025-27601 | MEDIUM | 4.3 | Mar 11, 2025 | Umbraco is a free and open source .NET content management system. An improper API access control issue has been identified Umbraco's API management package prior to versions 15.2.3 and 14.3.3, allowing low-privilege, authenticated users to create and update data type information that should be restricted to users with access to the settings section. The issue is patched in versions 15.2.3 and 14.3.3. No known workarounds are available. |
| CVE-2024-43376 | MEDIUM | 4.3 | Aug 20, 2024 | Umbraco is an ASP.NET CMS. Some endpoints in the Management API can return stack trace information, even when Umbraco is not in debug mode. This vulnerability is fixed in 14.1.2. |
| CVE-2024-47819 | MEDIUM | 4.2 | Oct 22, 2024 | Umbraco, a free and open source .NET content management system, has a cross-site scripting vulnerability starting in version 14.0.0 and prior to versions 14.3.1 and 15.0.0. This can be leveraged to gain access to higher-privilege endpoints, e.g. if you get a user with admin privileges to run the code, you can potentially elevate all users and grant them admin privileges or access protected content. Versions 14.3.1 and 15.0.0 contain a patch. As a workaround, ensure that access to the Dictionary |
| CVE-2024-48925 | NONE | 0.0 | Oct 22, 2024 | Umbraco, a free and open source .NET content management system, has an improper access control issue starting in version 14.0.0 and prior to version 14.3.0. The issue allows low-privilege users to access the webhook API and retrieve information that should be restricted to users with access to the settings section. Version 14.3.0 contains a patch. |