CVE-2025-23041 Short and Long Answer Fields Are Not Validated Server-Side For Maximum Length in Umbraco.Forms
Attackers can submit oversized form data bypassing client-side limits, potentially causing denial of service in Umbraco Forms applications.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-23041?
CVE-2025-23041 is a medium-severity vulnerability in Umbraco.Forms.Issues, published on 14 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Umbraco.Forms is a web form framework written for the nuget ecosystem. Character limits configured by editors for short and long answer fields are validated only client-side, not server-side. This issue has been patched in versions 8.13.16, 10.5.7, 13.2.2, and 14.1.2. Users are advised to upgrade. There are no known workarounds for this issue.
Weakness: CWE-20
Which versions are affected by CVE-2025-23041?
8 open source packages ship an affected version, including Umbraco.Forms and UmbracoForms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
Umbraco.Forms NuGet | All versions | 10.5.7 |
Umbraco.Forms NuGet | All versions | 10.5.7 |
Umbraco.Forms NuGet | From 11.0.0-rc1 | 13.2.2 |
Umbraco.Forms NuGet | From 11.0.0-rc1 | 13.2.2 |
Umbraco.Forms NuGet | From 14.0.0-beta001 | 14.1.2 |
Umbraco.Forms NuGet | From 14.0.0-beta001 | 14.1.2 |
2 more packages
UmbracoForms NuGet | All versions | 8.13.16 |
UmbracoForms NuGet | All versions | 8.13.16 |
Products include Umbraco Umbraco Forms.
How do I fix CVE-2025-23041?
Upgrade Umbraco.Forms to a fixed version for your release line: 10.5.7, 13.2.2 or 14.1.2.
Is CVE-2025-23041 being exploited?
There is no known exploitation of CVE-2025-23041 in the wild and no public exploit code.
Other vulnerabilities in Umbraco.Forms.Issues
- 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-2020-7685 Insecure Defaults
- CVE-2024-35239 Stored Cross-site Scripting on Components of Umbraco Forms
Sources
Also known as GHSA-9v8m-qv22-f268.