CVE-2020-7685 Insecure Defaults
Attackers can upload arbitrary files via default form configurations, potentially leading to code execution unless custom validation is implemented.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-7685?
CVE-2020-7685 is a medium-severity vulnerability in UmbracoForms, published on 28 Jul 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
This affects all versions of package UmbracoForms. When using the default configuration for upload forms, it is possible to upload arbitrary file types. The package offers a way for users to mitigate the issue. The users of this package can create a custom workflow and frontend validation that blocks certain file types, depending on their security needs and policies.
Weakness: CWE-1188
Which versions are affected by CVE-2020-7685?
2 open source packages ship an affected version, including UmbracoForms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
UmbracoForms NuGet | All versions to 8.4.1 | None |
UmbracoForms NuGet | All versions to 8.4.1 | None |
Products include Umbraco Umbraco Forms.
How do I fix CVE-2020-7685?
No fix has been published for CVE-2020-7685 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-7685 being exploited?
There is no known exploitation of CVE-2020-7685 in the wild and no public exploit code.
Other vulnerabilities in UmbracoForms
- CVE-2021-33224 File upload in n/a
- CVE-2025-68924 UmbracoForms Vulnerable to Remote Code Execution via Untrusted WSDL Compilation in Dynamic SOAP Client Generation
- CVE-2026-24687 Umbraco.Forms has path traversal and file enumeration vulnerability in Linux/Mac
- CVE-2025-23041 Short and Long Answer Fields Are Not Validated Server-Side For Maximum Length in Umbraco.Forms
- CVE-2024-35239 Stored Cross-site Scripting on Components of Umbraco Forms
Sources
Also known as GHSA-8m73-w2r2-6xxj.