GHSA-54mj-vcvj-q3v5
Umbraco CMS has an arbitrary file upload vulnerability
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| NuGet | Umbraco.Cms | <= 16.3.3 | no fix listed |
Details
As written in the advisory (Markdown source, shown as plain text).
An arbitrary file upload vulnerability in Umbraco CMS v16.3.3 allows attackers to execute arbitrary code via uploading a crafted PDF file. While Umbraco provides [hooks to perform file validation](https://docs.umbraco.com/umbraco-cms/reference/security/serverside-file-validation), it does not do implement filtering by default. Users are expected to implement their own validation.
Note: This vulnerability is [disputed by Ubraco](https://github.com/github/advisory-database/pull/6633).
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2025-67288
- https://github.com/github/advisory-database/pull/6633
- https://docs.umbraco.com/umbraco-cms/reference/security/serverside-file-validation
- https://github.com/umbraco/Umbraco-CMS
- https://github.com/vuquyen03/CVE/tree/main/CVE-2025-67288
- http://umbraco.com