mbraco Forms is a form builder that integrates with the Umbraco content management system. It's possible for an authenticated backoffice-user to enumerate and traverse paths/files on the systems filesystem and read their contents, on Mac/Linux Umbraco installations using Forms. As Umbraco Cloud runs in a Windows environment, Cloud users aren't affected. This issue affects versions 16 and 17 of Umbraco Forms and is patched in 16.4.1 and 17.1.1. If upgrading is not immediately possible, users can mitigate this vulnerability by configuring a WAF or reverse proxy to block requests containing path traversal sequences (`../`, `..\`) in the `fileName` parameter of the export endpoint, restricting network access to the Umbraco backoffice to trusted IP ranges, and/or blocking the `/umbraco/forms/api/v1/export` endpoint entirely if the export feature is not required. However, upgrading to the patched version is strongly recommended.
| Link | Resource |
|---|---|
| https://github.com/umbraco/Umbraco.Forms.Issues/security/advisories/GHSA-hm5p-82g6-m3xh | Vendor Advisory Mitigation |
Configuration 1 (hide)
| AND |
|
02 Mar 2026, 18:34
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.5 |
| CPE | cpe:2.3:a:umbraco:umbraco_forms:*:*:*:*:*:*:*:* cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| First Time |
Umbraco umbraco Forms
Linux Apple Umbraco Apple macos Linux linux Kernel |
|
| References | () https://github.com/umbraco/Umbraco.Forms.Issues/security/advisories/GHSA-hm5p-82g6-m3xh - Vendor Advisory, Mitigation | |
| Summary |
|
29 Jan 2026, 20:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Published : 2026-01-29 20:16
Updated : 2026-03-02 18:34
NVD link : CVE-2026-24687
Mitre link : CVE-2026-24687
CVE.ORG link : CVE-2026-24687
JSON object : View
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')