Which versions of Umbraco Forms are affected by CVE-2025-47280?

CVE-2025-47280 is a low-severity vulnerability in the 7.x branch and (CVSS 2.3). The limited severity suggests constrained impact, typically requiring specific conditions or local access for…. A patch is available.

Is there a public PoC exploit available for CVE-2025-47280?

Yes, a public proof-of-concept exploit is available for CVE-2025-47280. Prioritise patching immediately. EPSS: 0.3%.

How to fix or mitigate CVE-2025-47280?

During next maintenance window: Apply vendor patches when convenient. Monitor vendor channels for updates.

Umbraco Forms CVE-2025-47280

Q: What is the CVSS score of CVE-2025-47280?

CVE-2025-47280 has a CVSS 4.0 base score of 2.3 (Low). CVSS vector: 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.3%.

LOW

Improper Encoding or Escaping of Output (CWE-116)

2025-05-13 security-advisories@github.com

Authentication Bypass Umbraco Forms

2.3

CVSS 4.0 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

2.3 LOW

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Scope

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 28, 2026 - 18:41 vuln.today

PoC Detected

May 22, 2025 - 18:44 vuln.today

Public exploit code

CVE Published

May 13, 2025 - 17:16 nvd

LOW 2.3

DescriptionGitHub Advisory

Umbraco Forms is a form builder that integrates with the Umbraco content management system. Starting in the 7.x branch and prior to versions 13.4.2 and 15.1.2, the '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. This issue affects all (supported) versions Umbraco Forms and is patched in 13.4.2 and 15.1.2. Unpatched or unsupported versions can workaround this issue by using the Send email with template (Razor) workflow instead or writing a custom workflow type. To avoid accidentally using the vulnerable workflow again, the SendEmail workflow type can be removed using a composer available in the GitHub Security Advisory for this vulnerability.

AnalysisAI

Umbraco Forms is a form builder that integrates with the Umbraco content management system. Rated low severity (CVSS 2.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-116. Umbraco Forms is a form builder that integrates with the Umbraco content management system. Starting in the 7.x branch and prior to versions 13.4.2 and 15.1.2, the '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.4.2 and 15.1.2. Unpatched or unsupported versions can workaround this issue by using the Send email with template (Razor) workflow instead or writing a custom workflow type. To avoid accidentally using the vulnerable workflow again, the SendEmail workflow type can be removed using a composer available in the GitHub Security Advisory for this vulnerability. Affected products include: Umbraco Umbraco Forms.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

CVE-2025-47280 vulnerability details – vuln.today

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