Vulnerability in Umbraco Forms
CVE-2025-47280
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (18.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Umbraco Forms
- Umbraco Umbraco.forms.issues — versions >= 7.0.0, < 13.4.2, >= 15.0.0, < 15.1.2
Weakness classification (CWE)
References
- github.com/umbraco/Umbraco.Forms.Issues/security/advisories/GHSA-2qrj-g9hq-chph (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-47280?
- CVE-2025-47280 is a medium-severity vulnerability in Umbraco Forms, classified under Improper Encoding or Escaping of Output. CVSS score: 6.1/10. Published 2025-05-13.
- How severe is CVE-2025-47280?
- Medium severity. CVSS v3 base score is 6.1 out of 10.