CVE-2025-47280: Umbraco.Forms Umbraco.Forms Has HTML Injection Vulnerability Vulnerability
LOWCVE-2025-47280 is a LOW (CVSS 0.0) umbraco.forms has html injection vulnerability vulnerability (CWE-116: Improper Encoding or Escaping of Output) affecting Umbraco.Forms libraries in the NuGet ecosystem. The issue involves umbraco.forms has html injection vulnerability in 'send email' workflow. Remediation is available by upgrading affected packages to version 13.4.2, 15.1.2.
CVE-2025-47280 at a Glance
Security Impact
CVSS: 0.0
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:N).
How to Fix CVE-2025-47280
To remediate this vulnerability, upgrade all affected Umbraco.Forms dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade Umbraco.Forms to 13.4.2Upgrade UmbracoForms to Latest secure releaseUpgrade Umbraco.Forms to 15.1.2Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for Umbraco.FormsHow to Check if You Are Affected
To determine whether your application is affected by CVE-2025-47280, inspect your project dependencies for Umbraco.Forms:
inspect dependencies for Umbraco.FormsAnalyze the terminal output to locate any version of Umbraco.Forms in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 13.4.2), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-116: Improper Encoding or Escaping of Output, where the product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. as a result, the intended structure of the message is not preserved. In Umbraco.Forms, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2025-47280 Affected Umbraco.Forms Versions
3 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
Umbraco.Forms
|
NuGet |
≥ 7.0.0
< 13.4.2
|
13.4.2
|
|
UmbracoForms
|
NuGet |
≥ 7.0.0
≤ 8.13.16
|
|
|
Umbraco.Forms
|
NuGet |
≥ 14.0.0
< 15.1.2
|
15.1.2
|
References
Frequently Asked Questions
What is CVE-2025-47280?
Which Umbraco.Forms versions are affected?
What version fixes CVE-2025-47280?
Is Umbraco.Forms affected?
Is UmbracoForms affected?
What is the CVSS score of CVE-2025-47280?
What CWE is associated with CVE-2025-47280?
How can I check NuGet dependencies for CVE-2025-47280?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-2qrj-g9hq-chph",
"modified" : "2025-05-13T20:17:36Z",
"published" : "2025-05-13T20:17:36Z",
"aliases" : [ "CVE-2025-47280" ],
"summary" : "Umbraco.Forms has HTML injection vulnerability in 'Send email' workflow",
"details" : "### Impact\nThe 'Send email' workflow does not HTML encode the user-provided field values in the sent email message, making any form with this workflow configured vulnerable, as it allows sending the message from a trusted system and address (potentially bypassing spam and email client security systems).\n\n### Patches\nThis issue affects all (supported) versions Umbraco Forms and is patched in 13.4.2 and 15.1.2.\n\n### Workarounds\nUnpatched or unsupported versions can workaround this issue by using the 'Send email with template (Razor)' workflow instead or [writing a custom workflow type](https://docs.umbraco.com/umbraco-forms/developer/extending/adding-a-workflowtype).\n\nTo avoid accidentally using the vulnerable workflow again, the `SendEmail` workflow type can be removed using the following composer (tested on Umbraco 10, 13, 14 and 15):\n```c#\nusing Umbraco.Cms.Core.Composing;\nusing Umbraco.Forms.Core.Providers.Extensions;\nusing Umbraco.Forms.Core.Providers.WorkflowTypes;\n\ninternal sealed class RemoveFormsSendEmailWorkflowTypeComposer : IComposer\n{\n public void Compose(IUmbracoBuilder builder)\n => builder.FormsWorkflows().Exclude<SendEmail>();\n}\n```",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:N"
}, {
"type" : "CVSS_V4",
"score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N/E:U"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "NuGet",
"name" : "Umbraco.Forms"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "7.0.0"
}, {
"fixed" : "13.4.2"
} ]
} ]
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "UmbracoForms"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "7.0.0"
}, {
"last_affected" : "8.13.16"
} ]
} ]
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "Umbraco.Forms"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "14.0.0"
}, {
"fixed" : "15.1.2"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/umbraco/Umbraco.Forms.Issues/security/advisories/GHSA-2qrj-g9hq-chph"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-47280"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/umbraco/Umbraco.Forms.Issues"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-116" ],
"severity" : "LOW",
"github_reviewed" : true,
"github_reviewed_at" : "2025-05-13T20:17:36Z",
"nvd_published_at" : "2025-05-13T17:16:04Z"
}
}