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70 vulnerabilities found for Umbraco-CMS by umbraco
CVE-2026-46616 (GCVE-0-2026-46616)
Vulnerability from nvd – Published: 2026-06-10 15:56 – Updated: 2026-06-10 19:31
VLAI
Title
Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers
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.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/pull/22561 | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/pull/22565 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
< 13.14.0
Affected: >= 17.3.0-rc, < 17.4.0 |
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CVE-2026-46609 (GCVE-0-2026-46609)
Vulnerability from nvd – Published: 2026-06-10 15:59 – Updated: 2026-06-10 18:08
VLAI
Title
Umbraco.Cms: XSS/HTML Injection in Umbraco Backoffice confirmation dialog
Summary
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.
Severity
4.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 14.0.0, < 17.4.0
|
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CVE-2026-31834 (GCVE-0-2026-31834)
Vulnerability from nvd – Published: 2026-03-10 21:53 – Updated: 2026-03-11 15:58
VLAI
Title
Umbraco Affected by Vertical Privilege Escalation via Missing Authorization Checks
Summary
Umbraco is an ASP.NET CMS. From 15.3.1 to before 16.5.1 and 17.2.2, A privilege escalation vulnerability has been identified in Umbraco CMS. Under certain conditions, authenticated backoffice users with permission to manage users, may be able to elevate their privileges due to insufficient authorization enforcement when modifying user group memberships. The affected functionality does not properly validate whether a user has sufficient privileges to assign highly privileged roles. This vulnerability is fixed in 16.5.1 and 17.2.2.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 15.3.1, < 16.5.1
Affected: >= 17.0.0, < 17.2.1 |
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CVE-2026-31833 (GCVE-0-2026-31833)
Vulnerability from nvd – Published: 2026-03-10 21:51 – Updated: 2026-03-11 15:58
VLAI
Title
Umbraco has Stored XSS in UFM Rendering Pipeline via Permissive DOMPurify Attribute Filtering
Summary
Umbraco is an ASP.NET CMS. From 16.2.0 to before 16.5.1 and 17.2.2, An authenticated backoffice user with access to Settings can inject malicious HTML into property type descriptions. Due to an overly permissive attributeNameCheck configuration (/.+/) in the UFM DOMPurify instance, event handler attributes such as onclick and onload, when used within Umbraco web components (umb-*, uui-*, ufm-*) were not filtered. This vulnerability is fixed in 16.5.1 and 17.2.2.
Severity
6.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 16.2.0, < 16.5.1
Affected: >= 17.0.0, < 17.2.1 |
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CVE-2026-31832 (GCVE-0-2026-31832)
Vulnerability from nvd – Published: 2026-03-10 21:49 – Updated: 2026-03-11 15:58
VLAI
Title
Umbraco Backoffice API Allows Unauthorized Modification of Domain Data
Summary
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 privileges or start nodes). This vulnerability is fixed in 16.5.1 and 17.2.2.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 14.0.0, < 16.5.1
Affected: >= 17.0.0, < 17.2.0 |
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CVE-2025-66625 (GCVE-0-2025-66625)
Vulnerability from nvd – Published: 2025-12-09 20:09 – Updated: 2025-12-12 20:33
VLAI
Title
Umbraco Vulnerable to Improper File Access and Credential Exposure through Dictionary Import Functionality
Summary
Umbraco is an ASP.NET CMS. Due to unsafe handling and deletion of temporary files in versions 10.0.0 through 13.12.0, during the dictionary upload process an attacker with access to the backoffice can trigger predictable requests to temporary file paths. The application’s error responses (HTTP 500 when a file exists, 404 when it does not) allow the attacker to enumerate the existence of arbitrary files on the server’s filesystem. This vulnerability does not allow reading or writing file contents. In certain configurations, incomplete clean-up of temporary upload files may additionally expose the NTLM hash of the Windows account running the Umbraco application. This issue is fixed in version 13.12.1.
Severity
4.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/750… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
10.0.0, < 13.12.1
|
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CVE-2025-54425 (GCVE-0-2025-54425)
Vulnerability from nvd – Published: 2025-07-30 13:41 – Updated: 2025-07-30 14:06
VLAI
Title
Umbraco's Delivery API allows for cached requests to be returned with an invalid API key
Summary
Umbraco is an ASP.NET CMS. In versions 13.0.0 through 13.9.2, 15.0.0 through 15.4.1 and 16.0.0 through 16.1.0, the content delivery API can be restricted from public access where an API key must be provided in a header to authorize the request. It's also possible to configure output caching, such that the delivery API outputs will be cached for a period of time, improving performance. There's an issue when these two things are used together, where caching doesn't vary by the header that contains the API key. As such, it's possible for a user without a valid API key to retrieve a response for a given path and query if it has recently been requested and cached by request with a valid key. This is fixed in versions 13.9.3, 15.4.4 and 16.1.1.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/7e8… | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/commit/9f3… | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/commit/da4… | x_refsource_MISC |
| https://docs.umbraco.com/umbraco-cms/reference/co… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 13.0.0, < 13.9.3
Affected: >= 15.0.0, < 15.4.4 Affected: >= 16.0.0, < 16.1.1 |
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CVE-2025-49147 (GCVE-0-2025-49147)
Vulnerability from nvd – Published: 2025-06-24 17:37 – Updated: 2025-06-24 18:09
VLAI
Title
Umbraco.Cms Vulnerable to Disclosure of Configured Password Requirements
Summary
Umbraco, a free and open source .NET content management system, has a vulnerability in versions 10.0.0 through 10.8.10 and 13.0.0 through 13.9.1. Via a request to an anonymously authenticated endpoint it's possible to retrieve information about the configured password requirements. The information available is limited but would perhaps give some additional detail useful for someone attempting to brute force derive a user's password. This information was not exposed in Umbraco 7 or 8, nor in 14 or higher versions. The vulnerability is patched in versions 10.8.11 and 13.9.2.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-497 - Exposure of Sensitive System Information to an Unauthorized Control Sphere
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/b41… | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/commit/d8f… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 10.0.0, < 10.8.111
Affected: >= 13.0.0, < 13.9.2 |
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CVE-2025-48953 (GCVE-0-2025-48953)
Vulnerability from nvd – Published: 2025-06-03 18:19 – Updated: 2025-06-03 18:31
VLAI
Title
Umbraco Vulnerable to By-Pass of Configured Allowed Extensions for File Uploads
Summary
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.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/d92… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 14.0.0, < 15.4.2
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CVE-2025-46736 (GCVE-0-2025-46736)
Vulnerability from nvd – Published: 2025-05-06 17:08 – Updated: 2025-05-06 19:41
VLAI
Title
Umbraco Makes User Enumeration Feasible Based on Timing of Login Response
Summary
Umbraco is a free and open source .NET content management system. Prior to versions 10.8.10 and 13.8.1, based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. The issue is patched in versions 10.8.10 and 13.8.1. No known workarounds are available.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/14f… | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/commit/347… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 11.0.0-rc1, < 13.8.1
Affected: < 10.8.10 |
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CVE-2025-32017 (GCVE-0-2025-32017)
Vulnerability from nvd – Published: 2025-04-08 15:37 – Updated: 2025-04-09 17:13
VLAI
Title
Umbraco has a Management API Vulnerability to Path Traversal With Authenticated Users
Summary
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.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-23 - Relative Path Traversal
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/06a… | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/commit/d3c… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 14.0.0--preview004, < 14.3.4
Affected: >= 15.0.0-rc1, < 15.3.1 |
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CVE-2025-27602 (GCVE-0-2025-27602)
Vulnerability from nvd – Published: 2025-03-11 15:32 – Updated: 2025-03-11 18:52
VLAI
Title
Umbraco Allows a Restricted Editor User to Delete Media Item or Access Unauthorized Content
Summary
Umbraco is a free and open source .NET content management system. In versions of Umbraco's web backoffice program prior to versions 10.8.9 and 13.7.1, via manipulation of backoffice API URLs, it's possible for authenticated backoffice users to retrieve or delete content or media held within folders the editor does not have access to. The issue is patched in versions 10.8.9 and 13.7.1. No known workarounds are available.
Severity
4.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/5b5… | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/commit/788… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
< 10.8.9
Affected: >= 11.0.0-rc1, < 13.7.1 |
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CVE-2025-27601 (GCVE-0-2025-27601)
Vulnerability from nvd – Published: 2025-03-11 15:30 – Updated: 2025-03-11 18:53
VLAI
Title
Umbraco Allows Improper API Access Control to Low-Privilege Users to Data Type Functionality
Summary
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.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/d9f… | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/commit/ebb… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 15.0.0-rc1, < 15.2.3
Affected: < 14.3.3 |
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CVE-2025-24012 (GCVE-0-2025-24012)
Vulnerability from nvd – Published: 2025-01-21 15:32 – Updated: 2025-02-12 20:41
VLAI
Title
Umbraco Backoffice Components Have XSS/HTML Injection Vulnerability
Summary
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.
Severity
4.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/d4f… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 14.0.0, < 14.3.2
Affected: >= 15.0.0, < 15.1.2 |
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CVE-2025-24011 (GCVE-0-2025-24011)
Vulnerability from nvd – Published: 2025-01-21 15:27 – Updated: 2025-02-12 20:41
VLAI
Title
Umbraco CMS Vulnerable to User Enumeration Feasible Based On Management API Timing and Response Codes
Summary
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.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/559… | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/commit/839… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 14.0.0, < 14.3.2
Affected: >= 15.0.0, < 15.1.2 |
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CVE-2026-46609 (GCVE-0-2026-46609)
Vulnerability from cvelistv5 – Published: 2026-06-10 15:59 – Updated: 2026-06-10 18:08
VLAI
Title
Umbraco.Cms: XSS/HTML Injection in Umbraco Backoffice confirmation dialog
Summary
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.
Severity
4.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 14.0.0, < 17.4.0
|
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CVE-2026-46616 (GCVE-0-2026-46616)
Vulnerability from cvelistv5 – Published: 2026-06-10 15:56 – Updated: 2026-06-10 19:31
VLAI
Title
Umbraco.Cms: Open Redirect Vulnerability in Surface Controllers
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.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/pull/22561 | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/pull/22565 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
< 13.14.0
Affected: >= 17.3.0-rc, < 17.4.0 |
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CVE-2026-31834 (GCVE-0-2026-31834)
Vulnerability from cvelistv5 – Published: 2026-03-10 21:53 – Updated: 2026-03-11 15:58
VLAI
Title
Umbraco Affected by Vertical Privilege Escalation via Missing Authorization Checks
Summary
Umbraco is an ASP.NET CMS. From 15.3.1 to before 16.5.1 and 17.2.2, A privilege escalation vulnerability has been identified in Umbraco CMS. Under certain conditions, authenticated backoffice users with permission to manage users, may be able to elevate their privileges due to insufficient authorization enforcement when modifying user group memberships. The affected functionality does not properly validate whether a user has sufficient privileges to assign highly privileged roles. This vulnerability is fixed in 16.5.1 and 17.2.2.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 15.3.1, < 16.5.1
Affected: >= 17.0.0, < 17.2.1 |
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CVE-2026-31833 (GCVE-0-2026-31833)
Vulnerability from cvelistv5 – Published: 2026-03-10 21:51 – Updated: 2026-03-11 15:58
VLAI
Title
Umbraco has Stored XSS in UFM Rendering Pipeline via Permissive DOMPurify Attribute Filtering
Summary
Umbraco is an ASP.NET CMS. From 16.2.0 to before 16.5.1 and 17.2.2, An authenticated backoffice user with access to Settings can inject malicious HTML into property type descriptions. Due to an overly permissive attributeNameCheck configuration (/.+/) in the UFM DOMPurify instance, event handler attributes such as onclick and onload, when used within Umbraco web components (umb-*, uui-*, ufm-*) were not filtered. This vulnerability is fixed in 16.5.1 and 17.2.2.
Severity
6.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 16.2.0, < 16.5.1
Affected: >= 17.0.0, < 17.2.1 |
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CVE-2026-31832 (GCVE-0-2026-31832)
Vulnerability from cvelistv5 – Published: 2026-03-10 21:49 – Updated: 2026-03-11 15:58
VLAI
Title
Umbraco Backoffice API Allows Unauthorized Modification of Domain Data
Summary
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 privileges or start nodes). This vulnerability is fixed in 16.5.1 and 17.2.2.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 14.0.0, < 16.5.1
Affected: >= 17.0.0, < 17.2.0 |
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CVE-2025-66625 (GCVE-0-2025-66625)
Vulnerability from cvelistv5 – Published: 2025-12-09 20:09 – Updated: 2025-12-12 20:33
VLAI
Title
Umbraco Vulnerable to Improper File Access and Credential Exposure through Dictionary Import Functionality
Summary
Umbraco is an ASP.NET CMS. Due to unsafe handling and deletion of temporary files in versions 10.0.0 through 13.12.0, during the dictionary upload process an attacker with access to the backoffice can trigger predictable requests to temporary file paths. The application’s error responses (HTTP 500 when a file exists, 404 when it does not) allow the attacker to enumerate the existence of arbitrary files on the server’s filesystem. This vulnerability does not allow reading or writing file contents. In certain configurations, incomplete clean-up of temporary upload files may additionally expose the NTLM hash of the Windows account running the Umbraco application. This issue is fixed in version 13.12.1.
Severity
4.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/750… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
10.0.0, < 13.12.1
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CVE-2025-54425 (GCVE-0-2025-54425)
Vulnerability from cvelistv5 – Published: 2025-07-30 13:41 – Updated: 2025-07-30 14:06
VLAI
Title
Umbraco's Delivery API allows for cached requests to be returned with an invalid API key
Summary
Umbraco is an ASP.NET CMS. In versions 13.0.0 through 13.9.2, 15.0.0 through 15.4.1 and 16.0.0 through 16.1.0, the content delivery API can be restricted from public access where an API key must be provided in a header to authorize the request. It's also possible to configure output caching, such that the delivery API outputs will be cached for a period of time, improving performance. There's an issue when these two things are used together, where caching doesn't vary by the header that contains the API key. As such, it's possible for a user without a valid API key to retrieve a response for a given path and query if it has recently been requested and cached by request with a valid key. This is fixed in versions 13.9.3, 15.4.4 and 16.1.1.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/7e8… | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/commit/9f3… | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/commit/da4… | x_refsource_MISC |
| https://docs.umbraco.com/umbraco-cms/reference/co… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 13.0.0, < 13.9.3
Affected: >= 15.0.0, < 15.4.4 Affected: >= 16.0.0, < 16.1.1 |
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CVE-2025-49147 (GCVE-0-2025-49147)
Vulnerability from cvelistv5 – Published: 2025-06-24 17:37 – Updated: 2025-06-24 18:09
VLAI
Title
Umbraco.Cms Vulnerable to Disclosure of Configured Password Requirements
Summary
Umbraco, a free and open source .NET content management system, has a vulnerability in versions 10.0.0 through 10.8.10 and 13.0.0 through 13.9.1. Via a request to an anonymously authenticated endpoint it's possible to retrieve information about the configured password requirements. The information available is limited but would perhaps give some additional detail useful for someone attempting to brute force derive a user's password. This information was not exposed in Umbraco 7 or 8, nor in 14 or higher versions. The vulnerability is patched in versions 10.8.11 and 13.9.2.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-497 - Exposure of Sensitive System Information to an Unauthorized Control Sphere
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/b41… | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/commit/d8f… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 10.0.0, < 10.8.111
Affected: >= 13.0.0, < 13.9.2 |
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CVE-2025-48953 (GCVE-0-2025-48953)
Vulnerability from cvelistv5 – Published: 2025-06-03 18:19 – Updated: 2025-06-03 18:31
VLAI
Title
Umbraco Vulnerable to By-Pass of Configured Allowed Extensions for File Uploads
Summary
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.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/d92… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 14.0.0, < 15.4.2
|
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CVE-2025-46736 (GCVE-0-2025-46736)
Vulnerability from cvelistv5 – Published: 2025-05-06 17:08 – Updated: 2025-05-06 19:41
VLAI
Title
Umbraco Makes User Enumeration Feasible Based on Timing of Login Response
Summary
Umbraco is a free and open source .NET content management system. Prior to versions 10.8.10 and 13.8.1, based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. The issue is patched in versions 10.8.10 and 13.8.1. No known workarounds are available.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/14f… | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/commit/347… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 11.0.0-rc1, < 13.8.1
Affected: < 10.8.10 |
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CVE-2025-32017 (GCVE-0-2025-32017)
Vulnerability from cvelistv5 – Published: 2025-04-08 15:37 – Updated: 2025-04-09 17:13
VLAI
Title
Umbraco has a Management API Vulnerability to Path Traversal With Authenticated Users
Summary
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.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-23 - Relative Path Traversal
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/06a… | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/commit/d3c… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 14.0.0--preview004, < 14.3.4
Affected: >= 15.0.0-rc1, < 15.3.1 |
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CVE-2025-27602 (GCVE-0-2025-27602)
Vulnerability from cvelistv5 – Published: 2025-03-11 15:32 – Updated: 2025-03-11 18:52
VLAI
Title
Umbraco Allows a Restricted Editor User to Delete Media Item or Access Unauthorized Content
Summary
Umbraco is a free and open source .NET content management system. In versions of Umbraco's web backoffice program prior to versions 10.8.9 and 13.7.1, via manipulation of backoffice API URLs, it's possible for authenticated backoffice users to retrieve or delete content or media held within folders the editor does not have access to. The issue is patched in versions 10.8.9 and 13.7.1. No known workarounds are available.
Severity
4.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/5b5… | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/commit/788… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
< 10.8.9
Affected: >= 11.0.0-rc1, < 13.7.1 |
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CVE-2025-27601 (GCVE-0-2025-27601)
Vulnerability from cvelistv5 – Published: 2025-03-11 15:30 – Updated: 2025-03-11 18:53
VLAI
Title
Umbraco Allows Improper API Access Control to Low-Privilege Users to Data Type Functionality
Summary
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.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/d9f… | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/commit/ebb… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 15.0.0-rc1, < 15.2.3
Affected: < 14.3.3 |
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CVE-2025-24012 (GCVE-0-2025-24012)
Vulnerability from cvelistv5 – Published: 2025-01-21 15:32 – Updated: 2025-02-12 20:41
VLAI
Title
Umbraco Backoffice Components Have XSS/HTML Injection Vulnerability
Summary
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.
Severity
4.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/d4f… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 14.0.0, < 14.3.2
Affected: >= 15.0.0, < 15.1.2 |
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CVE-2025-24011 (GCVE-0-2025-24011)
Vulnerability from cvelistv5 – Published: 2025-01-21 15:27 – Updated: 2025-02-12 20:41
VLAI
Title
Umbraco CMS Vulnerable to User Enumeration Feasible Based On Management API Timing and Response Codes
Summary
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.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/a… | x_refsource_CONFIRM |
| https://github.com/umbraco/Umbraco-CMS/commit/559… | x_refsource_MISC |
| https://github.com/umbraco/Umbraco-CMS/commit/839… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| umbraco | Umbraco-CMS |
Affected:
>= 14.0.0, < 14.3.2
Affected: >= 15.0.0, < 15.1.2 |
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},
{
"name": "https://github.com/umbraco/Umbraco-CMS/commit/839b6816f2ae3e5f54459a0f09dad6b17e2d1e07",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/umbraco/Umbraco-CMS/commit/839b6816f2ae3e5f54459a0f09dad6b17e2d1e07"
}
],
"source": {
"advisory": "GHSA-hmg4-wwm5-p999",
"discovery": "UNKNOWN"
},
"title": "Umbraco CMS Vulnerable to User Enumeration Feasible Based On Management API Timing and Response Codes"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2025-24011",
"datePublished": "2025-01-21T15:27:30.090Z",
"dateReserved": "2025-01-16T17:31:06.458Z",
"dateUpdated": "2025-02-12T20:41:21.417Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}